This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Mulongo oyo etiyamaki na archive. Tuna motuna mosusu soki osengeli na lisalisi

Why doesn't cyrillic text show correctly in Thunderbird

  • 2 biyano
  • 1 eza na nkokoso oyo
  • 3 views
  • Eyano yasuka ya bwetherill

more options

When I receive an e-mail with Cyrillic text in Thunderbird it shows as nonsense text. How do I fix this without changing my primary language from English? I have version 60.8.0.

When I receive an e-mail with Cyrillic text in Thunderbird it shows as nonsense text. How do I fix this without changing my primary language from English? I have version 60.8.0.

Solution eye eponami

Try this: Menu icon > Options > Display > 'Formatting' tab Click on 'Advanced' button

Fonts for: Latin set fonts and sizes as desired Select: "Allow messages to use other fonts" Select: "Use fixed width font for plain text messages" Outgoing Mail : select Unicode (UTF-8) Incoming Mail  : select Unicode (UTF-8) untick "When possible use the default character encoding in replies"


On "Fonts For" drop-down menu repeat the procedure for Cyrillic and any other eg: Greek

On "Fonts For" drop-down menu select "Other Writing Systems" and repeat the procedure. Click on 'OK


In same 'Options' window...select Advanced > 'General' tab click on 'Config Editor' button It will say be careful :) In top search type: charset look for this line:

  • mailnews.force_charset_override

If Value = False then all is ok If Value = true double click on that line to toggle the value to 'False' Close window - top right X Click on OK to save and close Options window


Now check the Folder Properties Right click on Folder and select 'Properties' Fallback Text Encoding should say Unicode (UTF-8) Uncheck 'Apply encoding to all messages in the folder.............'. click on OK

Tanga eyano oyo ndenge esengeli 👍 0

All Replies (2)

more options

Solution eye oponami

Try this: Menu icon > Options > Display > 'Formatting' tab Click on 'Advanced' button

Fonts for: Latin set fonts and sizes as desired Select: "Allow messages to use other fonts" Select: "Use fixed width font for plain text messages" Outgoing Mail : select Unicode (UTF-8) Incoming Mail  : select Unicode (UTF-8) untick "When possible use the default character encoding in replies"


On "Fonts For" drop-down menu repeat the procedure for Cyrillic and any other eg: Greek

On "Fonts For" drop-down menu select "Other Writing Systems" and repeat the procedure. Click on 'OK


In same 'Options' window...select Advanced > 'General' tab click on 'Config Editor' button It will say be careful :) In top search type: charset look for this line:

  • mailnews.force_charset_override

If Value = False then all is ok If Value = true double click on that line to toggle the value to 'False' Close window - top right X Click on OK to save and close Options window


Now check the Folder Properties Right click on Folder and select 'Properties' Fallback Text Encoding should say Unicode (UTF-8) Uncheck 'Apply encoding to all messages in the folder.............'. click on OK

more options

Thank you. The Incoming Mail Unicode (UTF-8) correction fixed it.