https://drive.google.com/file/d/151A70tY12j39oGSjaAqwJQtbdPHH8Kky/view?usp=drivesdk

it used to work before without downloading extra apps, but now its not working.

hjzxeed said

it used to work before without downloading extra apps, but now its not working.

How about updating to the release version. That is 60.

But then thunderbrowse wouldn't work

hjzxeed said

But then thunderbrowse wouldn't work

So you have a choice. No thunderbrowse, or no filelink.

Given the author states it works with Works with Thunderbird 1.5 - 3.0a1 and it has caused all sorts of trouble for folks in the versions after 3 because it has not been updated over the years the choice is clear.

and what can you say about mega,pcloud, Box, Google drive,nextcloud,okeyonos,DL,firedrive for filelink,filerun for filelink.hubic for filelink,synnefo for filelink.....etc. these also are not working in thunderbird.

Some people finds it difficult to view the pic In first link, Here is another link of the same file https://www.dropbox.com/s/1sgnd59rybcvpbx/thunderbird%20cloud%20attachement%20error.png?dl=0

and not only dropbox but other cloud services also not working https://drive.google.com/open?id=1qqsi6DFsX2kMNvfqhfdWOEfbDmWKMq-Q

https://drive.google.com/open?id=1yJkBwb3dWmZIq77GgLDB2XpleOYu624M

https://drive.google.com/open?id=1LnlPu2VlxKclv4BEIFMMsTycrpp1BPks

https://drive.google.com/open?id=1jtua6fNZgzFTCkcqVxZveISL2z2h9lbV

same files from different cloud service

https://app.box.com/s/ydxbq0d14sujwof63mczm9bif3c8qa5g

https://app.box.com/s/8kwh2kek9j9f9cwozxlt0zkezljv63qq

https://app.box.com/s/s6qvgb6h011w7ivta6vsjzfuzq1ct8e7

https://app.box.com/s/vqaqc7wuv4jd3i51p34p9u8miuqxo3yb

same files from different cloud service

https://www.dropbox.com/s/0nj190r2ufy5o8b/ist%20picture.png?dl=0

https://www.dropbox.com/s/4wpg09fstjxcy0w/2nd%20picture.png?dl=0

https://www.dropbox.com/s/6j87009fmpxubct/3rd%20picture.png?dl=0

https://www.dropbox.com/s/kehr64tj5qz7q09/thunderbird%20cloud%20errors.flv?dl=0

Start Thunderbird in Safe Mode and then try to add filelink. https://support.mozilla.org/en-US/kb/safe-mode-thunderbird

Please report back on results.

in safe mode box works, but others dont work https://app.box.com/s/fq5bxz7w2f6yzsyn9zmra7v1ll2somnw

same file

https://drive.google.com/open?id=15u85GEuJ2WyM5YkvgLHlRrDvPjCthrlm

Mega is not working in Thunderbird okeanos for filelink is not working. Dl for thunderbird is not working. firedrive for filelink is not working hubic for filelink is not working nextcloud for filelink is not working. pcloud for thunderbird is not working pydio for filelink is not working synnefo for filelink is not working webdave for filelink is not working

hjzxeed said

and what can you say about mega,pcloud, Box, Google drive,nextcloud,okeyonos,DL,firedrive for filelink,filerun for filelink.hubic for filelink,synnefo for filelink.....etc. these also are not working in thunderbird.

Have you considered that is might be one of your add-ons, even Thunderbrowse that is causing the problem. I see it works in Safe mode. So it almost certainly is one of them.

Just update to the latest version and test it. There is a reason we do not support old versions. That is because even if extensive testing does find an issue, it will not be fixed. Even if the defect were to be found to continue into the current version, the fix would not be back ported to an old version.

point noted.