Can't send Emails: After clicking "send" buttons turn grey
Hello,
since 3 weeks I have the problem that emails, that I try to send, are no longer sent. When I have finished typing my mail - no matter whether I add a file or not - and click "Send", all buttons besides the "Security" button in the second menu line turn grey. The mail doesn't go to the sent mails folder and when I want to close the window, Thunderbird asks me whether I want to save the mail in the "drafts" folder.
I can not remember that I changed anything, the problem seems to have appeared on its own. I use Google Mail as an Email Provider, which even supports the newest TLS version. I also tried to deactivate my firewall and antivirus software (Windows Security) and add rules to allow Thunderbird incoming and outgoing requests. That didn't change anything.
I then tried to change the SMTP settings in thunderbird, changing the Port from 465 to 587. No effect at all.
I can receive all mails just 8as usual, only the SMTP server/sending emails causes problems.
Below you find my Thunderbird maintenance informations (in German, as I use the German client).
Hope you can solve this issue. I really need to be able to write dozens of mails in my daily business. So, if I can't solve this issue fast, I need to use another mailing software. I always liked Thunderbird and would be very unhappy to stop using it.
Kind regards
Jonas
Allgemeine Informationen
Name: Thunderbird Version: 78.6.0 Build-ID: 20201211152611 Distributions-ID:
Update-Kanal: release User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.6.0 Betriebssystem: Windows_NT 10.0
Starter-Prozess: Aktiviert Fenster mit mehreren Prozessen: 0/0 deaktiviert Externe Prozesse: 0 Unternehmensrichtlinien: Inaktiv Google-Location-Service-Schlüssel: Fehlt Google-Safebrowsing-Schlüssel: Fehlt Mozilla-Location-Service-Schlüssel: Fehlt Abgesicherter Modus: false
E-Mail- und Newsgruppen-Konten account1: INCOMING: account1, , (pop3) imap.gmail.com:995, SSL, passwordCleartext OUTGOING: , smtp.gmail.com:587, SSL, passwordCleartext, true
account2: INCOMING: account2, , (none) Local Folders, plain, passwordCleartext
Absturzberichte der letzten 3 Tage
Externe Prozesse
Typ: Anzahl
Erweiterungen
Name Version Aktiviert ID
Amazon.de 1.1 true amazon@search.mozilla.org
Bing 1.0 true bing@search.mozilla.org
Check and Send 2.0.18 true {1B0ADFEC-846C-401D-BA54-7842CBD485D4}
DuckDuckGo 1.0 true ddg@search.mozilla.org
Ecosia 1.0 true ecosia@search.mozilla.org
Google 1.0 true google@search.mozilla.org
LEO Eng-Deu 1.0 true leo_ende_de@search.mozilla.org
Provider für Google Kalender 78.0.1 true {a62ef8ec-5fdc-40c2-873c-223b8a6925cc}
Wikipedia (de) 1.0 true wikipedia@search.mozilla.org
Grammar Checker 0.9 false grammarchecker@codedgers.com
Sicherheitssoftware
Typ: Name
Antivirus: Microsoft Defender Antivirus Antispyware: Firewall: Windows-Firewall
Grafik
Allgemeine Merkmale Compositing: Direct3D 11 (Advanced Layers) Asynchrones Wischen und Zoomen: nichts WebGL-1-Treiber: WSI Info: EGL_VENDOR: Google Inc. (adapter LUID: 000000000000c3db)
EGL_VERSION: 1.4 (ANGLE 2.1.0.6c72b64f910d) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_CHROMIUM_sync_control EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_ANGLE_create_context_extensions_enabled EGL_ANDROID_blob_cache EGL_ANDROID_recordable EGL_ANGLE_image_d3d11_texture EGL_ANGLE_create_context_backwards_compatible EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses EGL_KHR_debug EGL_ANGLE_explicit_context EGL_ANGLE_feature_control
WebGL-1-Treiber: Renderer: Google Inc. -- ANGLE (NVIDIA GeForce GTX 980 Ti Direct3D11 vs_5_0 ps_5_0) WebGL-1-Treiber: Version: OpenGL ES 2.0.0 (ANGLE 2.1.0.6c72b64f910d) WebGL-1-Treiber: Erweiterungen: GL_ANGLE_client_arrays GL_ANGLE_depth_texture GL_ANGLE_explicit_context GL_ANGLE_explicit_context_gles1 GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_memory_size GL_ANGLE_multi_draw GL_ANGLE_multiview_multisample GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_provoking_vertex GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_lose_context GL_CHROMIUM_sync_query GL_EXT_blend_func_extended GL_EXT_blend_minmax GL_EXT_color_buffer_half_float GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_float_blend GL_EXT_frag_depth GL_EXT_instanced_arrays GL_EXT_map_buffer_range GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_bptc GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_KHR_parallel_shader_compile GL_KHR_robust_buffer_access_behavior GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_depth24 GL_OES_depth32 GL_OES_element_index_uint GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_3D GL_OES_texture_border_clamp GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_array_object OES_compressed_EAC_R11_signed_texture OES_compressed_EAC_R11_unsigned_texture OES_compressed_EAC_RG11_signed_texture OES_compressed_EAC_RG11_unsigned_texture OES_compressed_ETC2_RGB8_texture OES_compressed_ETC2_RGBA8_texture OES_compressed_ETC2_punchthroughA_RGBA8_texture OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture OES_compressed_ETC2_sRGB8_alpha8_texture OES_compressed_ETC2_sRGB8_texture WebGL-1-Erweiterungen: ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_float_blend EXT_frag_depth EXT_shader_texture_lod EXT_sRGB EXT_texture_compression_bptc EXT_texture_filter_anisotropic MOZ_debug OES_element_index_uint OES_standard_derivatives OES_texture_float OES_texture_float_linear OES_texture_half_float OES_texture_half_float_linear OES_vertex_array_object WEBGL_color_buffer_float WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context WebGL-2-Treiber: WSI Info: EGL_VENDOR: Google Inc. (adapter LUID: 000000000000c3db)
EGL_VERSION: 1.4 (ANGLE 2.1.0.6c72b64f910d) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_CHROMIUM_sync_control EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_ANGLE_create_context_extensions_enabled EGL_ANDROID_blob_cache EGL_ANDROID_recordable EGL_ANGLE_image_d3d11_texture EGL_ANGLE_create_context_backwards_compatible EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses EGL_KHR_debug EGL_ANGLE_explicit_context EGL_ANGLE_feature_control
WebGL-2-Treiber: Renderer: Google Inc. -- ANGLE (NVIDIA GeForce GTX 980 Ti Direct3D11 vs_5_0 ps_5_0) WebGL-2-Treiber: Version: OpenGL ES 3.0.0 (ANGLE 2.1.0.6c72b64f910d) WebGL-2-Treiber: Erweiterungen: GL_ANGLE_client_arrays GL_ANGLE_copy_texture_3d GL_ANGLE_depth_texture GL_ANGLE_explicit_context GL_ANGLE_explicit_context_gles1 GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_memory_size GL_ANGLE_multi_draw GL_ANGLE_multiview_multisample GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_provoking_vertex GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_multisample GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_lose_context GL_CHROMIUM_sync_query GL_EXT_blend_func_extended GL_EXT_blend_minmax GL_EXT_color_buffer_float GL_EXT_color_buffer_half_float GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_float_blend GL_EXT_frag_depth GL_EXT_instanced_arrays GL_EXT_map_buffer_range GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_bptc GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_norm16 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_KHR_parallel_shader_compile GL_KHR_robust_buffer_access_behavior GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_image_external_essl3 GL_OES_depth24 GL_OES_depth32 GL_OES_element_index_uint GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_3D GL_OES_texture_border_clamp GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_array_object GL_OVR_multiview GL_OVR_multiview2 OES_compressed_EAC_R11_signed_texture OES_compressed_EAC_R11_unsigned_texture OES_compressed_EAC_RG11_signed_texture OES_compressed_EAC_RG11_unsigned_texture OES_compressed_ETC2_RGB8_texture OES_compressed_ETC2_RGBA8_texture OES_compressed_ETC2_punchthroughA_RGBA8_texture OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture OES_compressed_ETC2_sRGB8_alpha8_texture OES_compressed_ETC2_sRGB8_texture WebGL-2-Erweiterungen: EXT_color_buffer_float EXT_float_blend EXT_texture_compression_bptc EXT_texture_filter_anisotropic MOZ_debug OES_texture_float_linear OVR_multiview2 WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context Direct2D: true Zeichnen auf Nebenthread aktiviert: true Anzahl Worker für Zeichnen auf Nebenthread: 4 Anvisierte Bildwiederholfrequenz (Framerate): 60 DirectWrite: true (10.0.19041.546)
GPU 1 Aktiv: Ja Beschreibung: NVIDIA GeForce GTX 980 Ti Herstellerkennung: 0x10de Gerätekennung: 0x17c8 Treiber-Version: 27.21.14.5671 Treiber-Datum: 9-30-2020 Treiber: C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_60daf66a00f2e0b6\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_60daf66a00f2e0b6\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_60daf66a00f2e0b6\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_60daf66a00f2e0b6\nvldumdx.dll C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_60daf66a00f2e0b6\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_60daf66a00f2e0b6\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_60daf66a00f2e0b6\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_60daf66a00f2e0b6\nvldumd.dll Subsys-ID: 32321462 RAM: 6144
GPU 2 Aktiv: Nein RAM: 0
Weitere Informationen AzureCanvasBackend: direct2d 1.1 AzureContentBackend: direct2d 1.1 AzureFallbackCanvasBackend: skia CMSOutputProfile: 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 Display0: 2560x1440@59Hz Display1: 2560x1440@59Hz DisplayCount: 2 ClearType-Parameter: \\.\DISPLAY1 [ Gamma: 2,2 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 200 ] \\.\DISPLAY2 [ Gamma: 2,2 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 400 ]
Entscheidungsprotokoll GPU_PROCESS: unavailable by default: Multi-process mode is not enabled WEBRENDER: opt-in by default: WebRender is an opt-in featureunavailable-no-gpu-process by runtime: GPU Process is disabled WEBRENDER_QUALIFIED: denied by env: Not on allowlist WEBRENDER_COMPOSITOR: unavailable by runtime: No DirectComposition usage WEBRENDER_ANGLE: opt-in by default: WebRender ANGLE is an opt-in feature WEBRENDER_DCOMP_PRESENT: opt-in by default: WebRender DirectComposition is an opt-in feature WEBGPU: disabled by default: Disabled by defaultblocked by runtime: WebGPU can only be enabled in nightly
Absturzverhinderer hat Funktionen deaktiviert
Lösungen
Fehlerprotokoll
Medien
Audio-Backend: wasapi Max. Kanäle: 2 Bevorzugte Sample-Rate: 44100 Roundtrip-Latenz (Standardabweichung): NaNms (NaN)
Ausgabegeräte
Name Gruppe Hersteller Status Bevorzugt Format Kanäle Rate Latenz
Razer Nommo 2.0 (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Unplugged None default: F32LE, support: S16LE F32LE 2 default: 48000, support: 48000 - 48000 0 - 0
Focusrite USB (Focusrite USB Audio) FocusriteUSB\Audio&Adapter\1&349dc930&0&id:0000000012358212 Disabled None default: F32LE, support: S16LE F32LE 2 default: 48000, support: 48000 - 48000 0 - 0
BenQ LCD (NVIDIA High Definition Audio) HDAUDIO\FUNC_01&VEN_10DE&DEV_0070&SUBSYS_14623232&REV_1001\5&201b6d4&0&0001 Enabled All default: F32LE, support: S16LE F32LE 2 default: 48000, support: 48000 - 48000 144 - 480
Interne AUX-Buchse (Focusrite USB MIDI) FocusriteUSB\MidiInOut\1&349dc930&0&id:0000000012358212 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0
USB-Headset (USB Audio Device) USB\VID_0D8C&PID_0012&MI_00\6&39038ea8&2&0000 Enabled None default: F32LE, support: S16LE F32LE 2 default: 48000, support: 48000 - 48000 144 - 480
Focusrite USB (Focusrite USB Audio) FocusriteUSB\Audio&Adapter\1&349dc930&0&id:0000000012358212 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0
NVIDIA HDMI Out (NVIDIA Virtual Audio Device (Wave Extensible) (WDM)) ROOT\UNNAMED_DEVICE\0000 Disabled None default: F32LE, support: S16LE F32LE 2 default: 48000, support: 48000 - 48000 0 - 0
PL2760Q (NVIDIA High Definition Audio) HDAUDIO\FUNC_01&VEN_10DE&DEV_0070&SUBSYS_14623232&REV_1001\5&201b6d4&0&0001 Enabled None default: F32LE, support: S16LE F32LE 2 default: 48000, support: 48000 - 48000 144 - 480
BenQ LCD (NVIDIA High Definition Audio) HDAUDIO\FUNC_01&VEN_10DE&DEV_0070&SUBSYS_14623232&REV_1001\5&201b6d4&0&0001 Disabled None default: F32LE, support: S16LE F32LE 2 default: 48000, support: 48000 - 48000 0 - 0
NVIDIA Output (NVIDIA High Definition Audio) HDAUDIO\FUNC_01&VEN_10DE&DEV_0070&SUBSYS_14623232&REV_1001\5&201b6d4&0&0001 Unplugged None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0
Focusrite Scarlett 4v4 (Focusrite USB Audio) FocusriteUSB\Audio&Adapter\1&349dc930&0&id:0000000012358212 Enabled All default: F32LE, support: S16LE F32LE 2 default: 44100, support: 44100 - 44100 133 - 441
Realtek HD Audio 2nd output (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Disabled None default: F32LE, support: S16LE F32LE 2 default: 48000, support: 48000 - 48000 0 - 0
NVIDIA Output (NVIDIA High Definition Audio) HDAUDIO\FUNC_01&VEN_10DE&DEV_0070&SUBSYS_14623232&REV_1001\5&201b6d4&0&0001 Unplugged None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0
Realtek Digital Output (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Enabled None default: F32LE, support: S16LE F32LE 2 default: 48000, support: 48000 - 48000 144 - 480
Leistungsmerkmale für Medien (Media Capabilities)
Datenbankeinträge auflisten
Eingabegeräte
Name Gruppe Hersteller Status Bevorzugt Format Kanäle Rate Latenz
Line in at rear panel (Grey) (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Disabled None default: F32LE, support: S16LE F32LE 2 default: 48000, support: 48000 - 48000 0 - 0
Subwoofer (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0
Rear Orange In (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0
Interne AUX-Buchse (NVIDIA High Definition Audio) HDAUDIO\FUNC_01&VEN_10DE&DEV_0070&SUBSYS_14623232&REV_1001\5&201b6d4&0&0001 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0
Interne AUX-Buchse (NVIDIA High Definition Audio) HDAUDIO\FUNC_01&VEN_10DE&DEV_0070&SUBSYS_14623232&REV_1001\5&201b6d4&0&0001 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0
Interne AUX-Buchse (Focusrite USB MIDI) FocusriteUSB\MidiInOut\1&349dc930&0&id:0000000012358212 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0
Side (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0
Rear (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0
Stereomix (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Disabled None default: F32LE, support: S16LE F32LE 2 default: 48000, support: 48000 - 48000 0 - 0
Mikrofon (NVIDIA Virtual Audio Device (Wave Extensible) (WDM)) ROOT\UNNAMED_DEVICE\0000 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0
Rear Pink In (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0
Rear Black In (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0
Rear Blue In (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0
Line in at rear panel (Green) (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Disabled None default: F32LE, support: S16LE F32LE 2 default: 48000, support: 48000 - 48000 0 - 0
Front Pink In (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0
Front Green In (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0
Eingang (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Unplugged None default: F32LE, support: S16LE F32LE 2 default: 48000, support: 48000 - 48000 0 - 0
Rear Green In (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0
Focusrite USB (Focusrite USB Audio) FocusriteUSB\Audio&Adapter\1&349dc930&0&id:0000000012358212 Disabled None default: F32LE, support: S16LE F32LE 2 default: 48000, support: 48000 - 48000 0 - 0
Line in at rear panel (black) (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Disabled None default: F32LE, support: S16LE F32LE 2 default: 48000, support: 48000 - 48000 0 - 0
Focusrite USB (Focusrite USB Audio) FocusriteUSB\Audio&Adapter\1&349dc930&0&id:0000000012358212 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0
Mikrofon (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Unplugged None default: F32LE, support: S16LE F32LE 2 default: 48000, support: 48000 - 48000 0 - 0
Mic in at rear panel (Pink) (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Disabled None default: F32LE, support: S16LE F32LE 2 default: 48000, support: 48000 - 48000 0 - 0
Line in at rear panel (Blue) (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Disabled None default: F32LE, support: S16LE F32LE 2 default: 48000, support: 48000 - 48000 0 - 0
Realtek Digital Input (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Enabled None default: F32LE, support: S16LE F32LE 2 default: 48000, support: 48000 - 48000 144 - 480
Rear Grey In (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0
Mic in at front panel (Pink) (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Disabled None default: F32LE, support: S16LE F32LE 2 default: 48000, support: 48000 - 48000 0 - 0
Focusrite USB (Focusrite USB Audio) FocusriteUSB\Audio&Adapter\1&349dc930&0&id:0000000012358212 Enabled All default: F32LE, support: S16LE F32LE 2 default: 44100, support: 44100 - 44100 133 - 441
Center (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0
Line in at front panel (Green) (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Disabled None default: F32LE, support: S16LE F32LE 2 default: 48000, support: 48000 - 48000 0 - 0
Line in at rear panel (Orange) (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Disabled None default: F32LE, support: S16LE F32LE 2 default: 48000, support: 48000 - 48000 0 - 0
Mikrofon (USB Audio Device) USB\VID_0D8C&PID_0012&MI_00\6&39038ea8&2&0000 Enabled All default: F32LE, support: S16LE F32LE 1 default: 48000, support: 48000 - 48000 144 - 480
Front (Realtek High Definition Audio) HDAUDIO\FUNC_01&VEN_10EC&DEV_0892&SUBSYS_1458A002&REV_1003\4&5327f15&0&0201 Disabled None default: F32LE, support: S16LE F32LE 0 default: 0, support: 0 - 0 0 - 0
Wichtige modifizierte Einstellungen
accessibility.lastLoadDate: 1544866567 accessibility.typeaheadfind.flashBar: 0 browser.cache.disk.amount_written: 1263303 browser.cache.disk.capacity: 655360 browser.cache.disk.filesystem_reported: 1 browser.search.region: DE extensions.lastAppVersion: 78.6.0 font.internaluseonly.changed: false font.name.monospace.el: Consolas font.name.monospace.x-cyrillic: Consolas font.name.monospace.x-unicode: Consolas font.name.monospace.x-western: Consolas font.name.sans-serif.el: Calibri font.name.sans-serif.x-cyrillic: Calibri font.name.sans-serif.x-unicode: Calibri font.name.sans-serif.x-western: Calibri font.name.serif.el: Cambria font.name.serif.x-cyrillic: Cambria font.name.serif.x-unicode: Cambria font.name.serif.x-western: Cambria font.size.fixed.el: 14 font.size.fixed.x-cyrillic: 14 font.size.fixed.x-unicode: 14 font.size.fixed.x-western: 14 font.size.variable.el: 17 font.size.variable.x-cyrillic: 17 font.size.variable.x-unicode: 17 font.size.variable.x-western: 17 gfx.crash-guard.d3d11layers.appVersion: 78.6.0 gfx.crash-guard.d3d11layers.deviceID: 0x17c8 gfx.crash-guard.d3d11layers.driverVersion: 27.21.14.5671 gfx.crash-guard.d3d11layers.feature-d2d: true gfx.crash-guard.d3d11layers.feature-d3d11: true gfx.crash-guard.status.d3d11layers: 2 gfx.crash-guard.status.wmfvpxvideo: 2 gfx.crash-guard.wmfvpxvideo.appVersion: 78.6.0 gfx.crash-guard.wmfvpxvideo.deviceID: 0x17c8 gfx.crash-guard.wmfvpxvideo.driverVersion: 27.21.14.5671 idle.lastDailyNotification: 1609937335 layers.mlgpu.sanity-test-failed: false media.gmp.storage.version.observed: 1 media.hardware-video-decoding.failed: false network.cookie.prefsMigrated: true network.predictor.cleaned-up: true places.database.lastMaintenance: 1609937335 places.history.expiration.transient_current_max_pages: 112348 plugin.flash.lastmod_hi: 373 plugin.flash.lastmod_lo: -1179214284 privacy.purge_trackers.date_in_cookie_database: 0 security.remote_settings.crlite_filters.checked: 1609935774 security.remote_settings.intermediates.checked: 1609935774 security.sandbox.content.tempDirSuffix: {cbb2a67e-509d-404c-af5b-3383f1388941} security.sandbox.plugin.tempDirSuffix: {9f659b3f-4297-4685-bde4-d1b5a6d5a26f} security.tls.version.min: 1 signon.importedFromSqlite: true storage.vacuum.last.index: 0 storage.vacuum.last.places.sqlite: 1609937335 ui.osk.debug.keyboardDisplayReason: IKPOS: Touch screen not found.
Wichtige nicht veränderbare Einstellungen
dom.ipc.processCount.webIsolated: 1 fission.autostart: false
Chronik- und Lesezeichendatenbank
Barrierefreiheit
Aktiviert: true Barrierefreiheit verhindern: 0 Accessible Handler verwendet: true Dienst für Barrierefreiheit aufgerufen durch: UNKNOWN|C:\Program Files (x86)\Unchecky\bin\unchecky_bg.exe
Bibliotheken-Versionen
Minimal vorausgesetzte Version Verwendete Version
NSPR 4.25.1 4.25.1
NSS 3.53.1 3.53.1
NSSSMIME 3.53.1 3.53.1
NSSSSL 3.53.1 3.53.1
NSSUTIL 3.53.1 3.53.1
Isolierte Umgebungen
Ebene der isolierten Umgebung des Inhaltsprozesses: 0 Effektive Ebene der isolierten Umgebung: 1
Start-Cache
Festplatten-Cache-Ordner: C:\Users\Jones\AppData\Local\Thunderbird\Profiles\f41trqq9.default\startupCache\startupCache.8.little Festplatten-Cache ignorieren: false Festplatten-Cache bei Initialisierung erkannt: true In Festplatten-Cache geschrieben: false
Internationalisierung & Lokalisierung
Anwendungseinstellungen Angeforderte Sprachen: ["de"] Verfügbare Sprachen: ["de","en-US"] Anwendungssprachen: ["de","en-US"] Region-Einstellungen: ["de-DE"] Standardsprache: "de"
Betriebssystem Sprachen des Betriebssystems: ["de-DE","en-US"] Region-Einstellungen: ["de-DE"]
Todas las respuestas (4)
If anyone has an answer to this issue: Please share it with me. I'd be so glad to continue using Thunderbird.
This might be a broken layout issue, or possibly due to using 'normal password' authentication instead of the preferred OAuth2 for gmail. Plus, the security on the outgoing server is STARTTLS on 587 or SSL/TLS on port 465 - either one works for gmail. Enter the correct security/port settings and change the authentication on the incoming and outgoing to OAuth2, check that cookies are allowed in TB Options/Privacy & Security, remove the passwords in Saved Passwords in the same section, uncheck 'Place a copy in' in the Copies & Folders section of Account Settings (gmail automatically copies sent messages to Sent), then restart TB and enter the account password in the OAuth browser window when prompted.
If sending still fails after those changes, test for broken layout by running in safe mode (hold Shift when launching TB).
sfhowes said
This might be a broken layout issue, or possibly due to using 'normal password' authentication instead of the preferred OAuth2 for gmail. Plus, the security on the outgoing server is STARTTLS on 587 or SSL/TLS on port 465 - either one works for gmail. Enter the correct security/port settings and change the authentication on the incoming and outgoing to OAuth2, check that cookies are allowed in TB Options/Privacy & Security, ...
I already did all of this, but it didn't work for me. But now, I know why, thanks to your second solution approach:
sfhowes said
If sending still fails after those changes, test for broken layout by running in safe mode (hold Shift when launching TB).
I did this, tried to send a test mail to my girlfriend's mail address and - voilà - it worked without any problem. So the issue must be in an addon or any setting that differs from the standard setup of TB. Any clue how I can identify the exact problem? At least I can now send mails again and continue using TB. Now I just need to be able to use it without safe mode again.
Thanks a lot so far, you were already very helpful :)
If the problem is caused by add-ons, enable them one-at-a-time in normal mode to find the one that is the cause.
If add-ons aren't the cause, launch in safe mode, check 'Reset toolbars & controls', 'Make changes & restart', and see if the problem still occurs in normal mode.