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   Under 'Application Basics' - Profile Folder - click on 'Open Folder' 

This opens a new window showing the contents of your current in use profile name folder.

   Exit Thunderbird now - this is important. 

Look for the following files and delete them.

   cert8.db - obselete file
   cert9.db - currently used file
   key3.db - obselete file
   key4.db - current used file
   logins.json - current used file
   pkcs11.txt (some people report this file missing)
   secmod.db - obselete file
   session.json
   xulstore.json 

See next comment before you start Thunderbird as you need to empty cache files.

Start Thunderbird

Add yahoo and make sure all the settings are correct. Make sure Authentication Method is Oauth and user name is full yahoo email address.

Report on results.

Modified 15 zuwɛn 2022 23:27:52 -0700 by Toad-Hall Toad-Hall Toad-Hall

   Top 10 Contributor

15/6/2022 23:26 Chosen Solution

ADDITIONAL Whilst Thunderbird is closed - after you have deleted the files mentioned previously.

access : C:/Users/ User Account/Appdata/Local/Thunderbird/Profiles/ Please note this is the Appdata 'Local' location which the computer uses as a cache. Be sure you are in the 'Local' and not the 'Roaming' Delete the contents of the 'Profiles' folder.

then start Thunderbird. keep having to reset my secure key password and tried this in "Roaming" instead of "Local" Help!

I manage currently six mail accounts with TB. The sixth account created today is at the end of the list, oddly after the "Local Folders". When I try to create a Folder in this new account using the option in drop down menu it accepts the name but the folder is not created. on all other accounts there is no problem in creating a folder this way. Other than this problem the new account works as intended. I have restarted several times TB but this did not help. Thank you for the attention.

Installed version: 128.6.1esr (64-bit)

I most recently reported an issue in relevance to account verification using an email string in addition to 2FA App on mobile, my issue only resolved it's self after the system realized I verified the account without the email side of the equation. I'm now struggling to locate my original inquiry readily so as to add remarks and identify particularly what portion of the security mechanism doesn't like the security codes sent via email.

Visit the official Mozilla Support site (https://support.mozilla.org) or other recognized resources for all technical support issues. There are no other Mozilla-endorsed technical support agencies and any that use the Mozilla name or logos to claim affiliation with Mozilla should be reported here. External links in the support forums on https://support.mozilla.org are vetted by moderators and are safe to visit. Mozilla does not offer telephone support. Do not call or give information to agents claiming to represent Mozilla. Download Mozilla software from official sources only. Official Firefox download page Official Thunderbird download page When downloading anything with the Firefox logo on your phone or tablet, check the developer information and make sure it really is released by Mozilla.

Today I've noticed some horizontal lines on youtube videos. Upon further investigation, I've traced it to a single div element:

The base64 encoded image is the lines I'm seeing.

Initially after starting a new private session and navigating straight to youtube.com I had no lines. Then in that private session same element doesn't have an image:

What's odd about this is if I opened a private window and copy pasted the same video URL I would get the lines. After testing multiple times I started getting the lines even after navigating straight to youtube.com.

So I did another test: changed my IP with a VPN in a private session. Navigated straight to youtube.com, watched multiple videos without any lines. Then I logged in to my account and boom, the lines are back...

Opening the same video on google chrome browser I get a smooth gradient line image:

The browser is functioning as intended, but youtube is intentionally making their website unusable. What the f###? I have youtube premium, adblocker disabled on their website.

Firefox 135.0 (64-bit) on Ubuntu 22.04.5. When trying to save any file (download, save image etc.) or trying to attach a file (in web-based gmail client or WhatsApp web client) nothing happens. Tried to refresh, switch off all extensions, clear download history - nothing helped. Chrome works on the same machine like a charm...

Do you have any suggestions?

Thank you

Since the Firefox 135.0 update loaded during the second week of February 2025, only the first tab displays short-cut tile rows ~ but thereafter all tabs are blank now.

What is going on?

So i am using ReseourceOverride AddOn to debug a js library on standard install of firefox. This works by using the site as normal but resource override has instruction to replace request for the library on server with one requesting it from localhost. This used to work without problems. However today i noticed that breakpoints aren't getting hit. I have downgraded to version 132.0.2 and breakpoints work once again. I think this has something to do with debug sources, since the load process adds 2 sources, webpack containing uncompiled code and where i set break points, and webpack-internal which i think is built js library before getting minified. Links to exceptions in console also dont work instead of linking to webpack seemlesly, the adress says webpack-internal and link open a new window and complains that the adress is nonsense (see attached images)

Thatnks for the help

After the Dec 10 update to 133.0.3 (aarch64) on my MacBook Air macOS 15.1.1, all of the menu keystroke options are greyed out. Also, in Settings, Firefox is selected as the default browser, but the option is greyed out so that it is not possible to change. I've disabled all add-ons except my password program, tried troubleshooting mode, and restarted.

I have just re-installed MW due to probs using the original one, but now I cannot enter my registration code,(life time) there is no where to do so it seems,have looked everywhere?

Visit the official Mozilla Support site (https://support.mozilla.org) or other recognized resources for all technical support issues. There are no other Mozilla-endorsed technical support agencies and any that use the Mozilla name or logos to claim affiliation with Mozilla should be reported here. External links in the support forums on https://support.mozilla.org are vetted by moderators and are safe to visit. Mozilla does not offer telephone support. Do not call or give information to agents claiming to represent Mozilla. Download Mozilla software from official sources only. Official Firefox download page Official Thunderbird download page When downloading anything with the Firefox logo on your phone or tablet, check the developer information and make sure it really is released by Mozilla. link text