Hi,

We are currently aware of this bug. Please see bug 1304360 for more information about the situation.

This issue can currently be solved by disabling hardware acceleration on Firefox.

The developers need your help to solve this issue. If possible, can you please enter about:support in the Firefox address bar. This page contains information about your system and Firefox. Please click the Copy text to clipboard button and paste the information into this thread. This will help the developers to discover the cause of the issue and create a potential patch.

Thanks in advance for your assistance with this bug. Sorry for any inconvenience.

Application Basics

Name: Firefox Version: 49.0.1 Build ID: 20160922113459 Update Channel: release User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:49.0) Gecko/20100101 Firefox/49.0 OS: Windows_NT 10.0 Multiprocess Windows: 0/1 (Disabled by add-ons) Safe Mode: false

Crash Reports for the Last 3 Days

All Crash Reports

Extensions

Name: Kaspersky Protection Version: 5.0.130-0-20160620125320 Enabled: true ID: light_plugin_F6F079488B53499DB99380A7E11A93F6@kaspersky.com

Name: Multi-process staged rollout Version: 1.3 Enabled: true ID: e10srollout@mozilla.org

Name: Pocket Version: 1.0.4 Enabled: true ID: firefox@getpocket.com

Name: Web Compat Version: 1.0 Enabled: true ID: webcompat@mozilla.org

Graphics

Features Compositing: Direct3D 11 Asynchronous Pan/Zoom: none WebGL Renderer: Google Inc. -- ANGLE (Intel(R) HD Graphics 520 Direct3D11 vs_5_0 ps_5_0) Hardware H264 Decoding: Yes; Using D3D11 API Direct2D: true DirectWrite: true (10.0.14393.206) GPU #1 Active: Yes Description: Intel(R) HD Graphics 520 Vendor ID: 0x8086 Device ID: 0x1916 Driver Version: 20.19.15.4364 Driver Date: 1-6-2016 Drivers: igdumdim64 igd10iumd64 igd10iumd64 igd12umd64 igdumdim32 igd10iumd32 igd10iumd32 igd12umd32 Subsys ID: 00000000 RAM: Unknown

Diagnostics AzureCanvasAccelerated: 0 AzureCanvasBackend: direct2d 1.1 AzureContentBackend: direct2d 1.1 AzureFallbackCanvasBackend: cairo

Important Modified Preferences

accessibility.lastLoadDate: 1475362970 accessibility.loadedInLastSession: true browser.cache.disk.capacity: 358400 browser.cache.disk.filesystem_reported: 1 browser.cache.disk.smart_size.first_run: false browser.cache.frecency_experiment: 2 browser.download.importedFromSqlite: true browser.places.smartBookmarksVersion: 8 browser.sessionstore.restore_on_demand: false browser.sessionstore.upgradeBackup.latestBuildID: 20160922113459 browser.startup.homepage: http://babyproducts.about.com/ browser.startup.homepage_override.buildID: 20160922113459 browser.startup.homepage_override.mstone: 49.0.1 browser.tabs.remote.autostart.2: true browser.tabs.warnOnOpen: false browser.urlbar.daysBeforeHidingSuggestionsPrompt: 2 browser.urlbar.lastSuggestionsPromptDate: 20160926 browser.urlbar.maxRichResults: 12 browser.urlbar.suggest.searches: true dom.apps.lastUpdate.buildID: 20160922113459 dom.apps.lastUpdate.mstone: 49.0.1 dom.apps.reset-permissions: true dom.push.userAgentID: e720b84b33234836bc71cb1777291ec8 extensions.lastAppVersion: 49.0.1 gfx.crash-guard.d3d11layers.appVersion: 49.0.1 gfx.crash-guard.d3d11layers.deviceID: 0x1916 gfx.crash-guard.d3d11layers.driverVersion: 20.19.15.4364 gfx.crash-guard.d3d11layers.feature-d2d: true gfx.crash-guard.d3d11layers.feature-d3d11: true gfx.crash-guard.status.d3d11layers: 2 gfx.crash-guard.status.d3d11video: 2 media.benchmark.vp9.fps: 132 media.benchmark.vp9.versioncheck: 1 media.gmp-eme-adobe.abi: x86-msvc-x64 media.gmp-eme-adobe.lastUpdate: 1474859532 media.gmp-eme-adobe.version: 17 media.gmp-gmpopenh264.abi: x86-msvc-x64 media.gmp-gmpopenh264.lastUpdate: 1474859536 media.gmp-gmpopenh264.version: 1.6 media.gmp-manager.buildID: 20160922113459 media.gmp-manager.lastCheck: 1475198016 media.gmp-widevinecdm.abi: x86-msvc-x64 media.gmp-widevinecdm.lastUpdate: 1474859550 media.gmp-widevinecdm.version: 1.4.8.903 media.gmp.storage.version.observed: 1 media.hardware-video-decoding.failed: false media.webrtc.debug.log_file: C:\Users\HEATHE~1\AppData\Local\Temp\WebRTC.log network.cookie.prefsMigrated: true network.predictor.cleaned-up: true places.database.lastMaintenance: 1475517175 places.history.expiration.transient_current_max_pages: 104858 plugin.disable_full_page_plugin_for_types: application/pdf plugin.importedState: true print.printer_Canon_MX890_series_Printer_WS.print_bgcolor: false print.printer_Canon_MX890_series_Printer_WS.print_bgimages: false print.printer_Canon_MX890_series_Printer_WS.print_duplex: -437918235

services.sync.declinedEngines: services.sync.engine.prefs.modified: false services.sync.lastPing: 1475517174 services.sync.lastSync: Mon Oct 03 2016 14:42:09 GMT-0500 (Central Standard Time) services.sync.numClients: 2 storage.vacuum.last.index: 1 storage.vacuum.last.places.sqlite: 1474861590 ui.osk.debug.keyboardDisplayReason: IKPOS: ConvertibleSlateMode is non-zero

Important Locked Preferences

Places Database

JavaScript

Incremental GC: true

Accessibility

Activated: true Prevent Accessibility: 0

Library Versions

NSPR Expected minimum version: 4.12 Version in use: 4.12

NSS Expected minimum version: 3.25 Version in use: 3.25

NSSSMIME Expected minimum version: 3.25 Version in use: 3.25

NSSSSL Expected minimum version: 3.25 Version in use: 3.25

NSSUTIL Expected minimum version: 3.25 Version in use: 3.25

Experimental Features