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

Error in Migrating Thunderbird Profile to new PC

  • 3 cavab
  • 0 have this problem
  • 1 view
  • Last reply by david

more options

Hi, am getting this error and am unable to use our new PC as this Thunderbird mail app is failing to migrate the profile from the other windows PC. Need your help asap on how to fix this. Not very technical, so need help. I updated Thunderbird to the latest version (115.11.0 32 bit) on my old PC before copying the profile over and loading Thunderbird on this new PC which has 115.11.0 64 bit version.

Uncaught (in promise) NS_ERROR_FILE_NOT_FOUND: Component returned failure code: 0x80520012 (NS_ERROR_FILE_NOT_FOUND) [nsIFile.copyTo]

   _recursivelyCopyMsgFolder resource:///modules/ThunderbirdProfileImporter.jsm:659
   _recursivelyCopyMsgFolder resource:///modules/ThunderbirdProfileImporter.jsm:668
   _mergeLocalFolders resource:///modules/ThunderbirdProfileImporter.jsm:641
   _importServersAndAccounts resource:///modules/ThunderbirdProfileImporter.jsm:250
Hi, am getting this error and am unable to use our new PC as this Thunderbird mail app is failing to migrate the profile from the other windows PC. Need your help asap on how to fix this. Not very technical, so need help. I updated Thunderbird to the latest version (115.11.0 32 bit) on my old PC before copying the profile over and loading Thunderbird on this new PC which has 115.11.0 64 bit version. Uncaught (in promise) NS_ERROR_FILE_NOT_FOUND: Component returned failure code: 0x80520012 (NS_ERROR_FILE_NOT_FOUND) [nsIFile.copyTo] _recursivelyCopyMsgFolder resource:///modules/ThunderbirdProfileImporter.jsm:659 _recursivelyCopyMsgFolder resource:///modules/ThunderbirdProfileImporter.jsm:668 _mergeLocalFolders resource:///modules/ThunderbirdProfileImporter.jsm:641 _importServersAndAccounts resource:///modules/ThunderbirdProfileImporter.jsm:250
Attached screenshots

All Replies (3)

more options

I am not sure the steps you took, but I suggest this: - exit TB on old pc - copy c:\users\<yourid>\appdata\roaming\thunderbird to external media - be sure TB is not running on new PC - copy the thunderbird folder from external media to c:\users\<yourid>\appdata\roaming to overlay the current thunderbird folder. If prompted for overwrite, allow it. - start TB and all should be there

more options

Followed instructions, did not work. Got an error saying "Your Thunderbird profile cannot be loaded. It may be missing or inaccessible" . I tried renaming the profiles.ini file to profiles.iniOLD and restarted TB. It prompted me to create a new profile and of course when it loaded, it came in with no mail. HELP please.

more options

If you had copied the thunderbird folder intact from old to new, with no changes, the process works. Somehow, your profiles.ini got changed. That is the one file that thunderbird obeys: if the profile being pointed to doesn't exist, you get that error message. To fix this, you can edit the profiles.ini so that all pointers are to the correct profile. Any spelling error will cause the message to occur.