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Import fails with errors

  • 7 replies
  • 0 have this problem
  • Last reply by david

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I tried to do an import of a backup profile that was very large, greater than 3 GB. System says this file is too big to recover. Error console is as follows:

1725191863571 addons.xpi WARN Checking C:\Program Files\Mozilla Thunderbird\distribution\extensions for addons Found 0 public keys and 0 secret keys (0 protected, 0 unprotected) RNPLib.jsm:559:15 1725191864673 addons.xpi WARN Addon with ID thunderbird-compact-light@mozilla.org already installed, older version will be disabled 1725191864673 addons.xpi WARN Addon with ID thunderbird-compact-dark@mozilla.org already installed, older version will be disabled Layout was forced before the page was fully loaded. If stylesheets are not yet loaded this may cause a flash of unstyled content. 4 msgHdrView.js:4194:6 downloadable font: failed to start download (font-family: "YahooSans" style:normal weight:400 stretch:100 src index:0): content blocked source: https://s.yimg.com/os/fontserver/YahooSans/Regular.woff2 2 downloadable font: failed to start download (font-family: "YahooSans" style:normal weight:400 stretch:100 src index:1): content blocked source: https://s.yimg.com/os/fontserver/YahooSans/Regular.woff 2 downloadable font: failed to start download (font-family: "YahooSans" style:normal weight:600 stretch:100 src index:0): content blocked source: https://s.yimg.com/os/fontserver/YahooSans/Semibold.woff2 2 downloadable font: failed to start download (font-family: "YahooSans" style:normal weight:600 stretch:100 src index:1): content blocked source: https://s.yimg.com/os/fontserver/YahooSans/Semibold.woff 2 This page uses the non standard property “zoom”. Consider using calc() in the relevant property values, or using “transform” along with “transform-origin: 0 0”. importexport Some cookies are misusing the recommended “SameSite“ attribute 10 downloadable font: kern: Too large subtable (font-family: "Open Sans" style:normal weight:700 stretch:100 src index:2) source: https://addons.thunderbird.net/static/css/impala/fonts/OpenSans-Bold.ttf?5014568 downloadable font: Table discarded (font-family: "Open Sans" style:normal weight:700 stretch:100 src index:2) source: https://addons.thunderbird.net/static/css/impala/fonts/OpenSans-Bold.ttf?5014568 downloadable font: kern: Too large subtable (font-family: "Open Sans" style:italic weight:400 stretch:100 src index:2) source: https://addons.thunderbird.net/static/css/impala/fonts/OpenSans-Italic.ttf?c7dcce0 downloadable font: Table discarded (font-family: "Open Sans" style:italic weight:400 stretch:100 src index:2) source: https://addons.thunderbird.net/static/css/impala/fonts/OpenSans-Italic.ttf?c7dcce0 downloadable font: kern: Too large subtable (font-family: "Open Sans" style:normal weight:700 stretch:100 src index:2) source: https://addons.thunderbird.net/static/css/impala/fonts/OpenSans-Bold.ttf?5014568 downloadable font: Table discarded (font-family: "Open Sans" style:normal weight:700 stretch:100 src index:2) source: https://addons.thunderbird.net/static/css/impala/fonts/OpenSans-Bold.ttf?5014568 downloadable font: kern: Too large subtable (font-family: "Open Sans" style:italic weight:400 stretch:100 src index:2) source: https://addons.thunderbird.net/static/css/impala/fonts/OpenSans-Italic.ttf?c7dcce0 downloadable font: Table discarded (font-family: "Open Sans" style:italic weight:400 stretch:100 src index:2) source: https://addons.thunderbird.net/static/css/impala/fonts/OpenSans-Italic.ttf?c7dcce0 InstallTrigger is deprecated and will be removed in the future. impala-min.js:1:31868 Uncaught TypeError: tab.browser.contentWindow.showTab is not a function

   toImport chrome://messenger/content/mailCore.js:587

mailCore.js:587:39 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
   _importMailMessages resource:///modules/ThunderbirdProfileImporter.jsm:588
   _importServersAndAccounts resource:///modules/ThunderbirdProfileImporter.jsm:248

2 ThunderbirdProfileImporter.jsm:659 NS_ERROR_NOT_AVAILABLE WebGL context was lost. 2 Troubleshoot.sys.mjs:710:17

I tried to do an import of a backup profile that was very large, greater than 3 GB. System says this file is too big to recover. Error console is as follows: 1725191863571 addons.xpi WARN Checking C:\Program Files\Mozilla Thunderbird\distribution\extensions for addons Found 0 public keys and 0 secret keys (0 protected, 0 unprotected) RNPLib.jsm:559:15 1725191864673 addons.xpi WARN Addon with ID thunderbird-compact-light@mozilla.org already installed, older version will be disabled 1725191864673 addons.xpi WARN Addon with ID thunderbird-compact-dark@mozilla.org already installed, older version will be disabled Layout was forced before the page was fully loaded. If stylesheets are not yet loaded this may cause a flash of unstyled content. 4 msgHdrView.js:4194:6 downloadable font: failed to start download (font-family: "YahooSans" style:normal weight:400 stretch:100 src index:0): content blocked source: https://s.yimg.com/os/fontserver/YahooSans/Regular.woff2 2 downloadable font: failed to start download (font-family: "YahooSans" style:normal weight:400 stretch:100 src index:1): content blocked source: https://s.yimg.com/os/fontserver/YahooSans/Regular.woff 2 downloadable font: failed to start download (font-family: "YahooSans" style:normal weight:600 stretch:100 src index:0): content blocked source: https://s.yimg.com/os/fontserver/YahooSans/Semibold.woff2 2 downloadable font: failed to start download (font-family: "YahooSans" style:normal weight:600 stretch:100 src index:1): content blocked source: https://s.yimg.com/os/fontserver/YahooSans/Semibold.woff 2 This page uses the non standard property “zoom”. Consider using calc() in the relevant property values, or using “transform” along with “transform-origin: 0 0”. importexport Some cookies are misusing the recommended “SameSite“ attribute 10 downloadable font: kern: Too large subtable (font-family: "Open Sans" style:normal weight:700 stretch:100 src index:2) source: https://addons.thunderbird.net/static/css/impala/fonts/OpenSans-Bold.ttf?5014568 downloadable font: Table discarded (font-family: "Open Sans" style:normal weight:700 stretch:100 src index:2) source: https://addons.thunderbird.net/static/css/impala/fonts/OpenSans-Bold.ttf?5014568 downloadable font: kern: Too large subtable (font-family: "Open Sans" style:italic weight:400 stretch:100 src index:2) source: https://addons.thunderbird.net/static/css/impala/fonts/OpenSans-Italic.ttf?c7dcce0 downloadable font: Table discarded (font-family: "Open Sans" style:italic weight:400 stretch:100 src index:2) source: https://addons.thunderbird.net/static/css/impala/fonts/OpenSans-Italic.ttf?c7dcce0 downloadable font: kern: Too large subtable (font-family: "Open Sans" style:normal weight:700 stretch:100 src index:2) source: https://addons.thunderbird.net/static/css/impala/fonts/OpenSans-Bold.ttf?5014568 downloadable font: Table discarded (font-family: "Open Sans" style:normal weight:700 stretch:100 src index:2) source: https://addons.thunderbird.net/static/css/impala/fonts/OpenSans-Bold.ttf?5014568 downloadable font: kern: Too large subtable (font-family: "Open Sans" style:italic weight:400 stretch:100 src index:2) source: https://addons.thunderbird.net/static/css/impala/fonts/OpenSans-Italic.ttf?c7dcce0 downloadable font: Table discarded (font-family: "Open Sans" style:italic weight:400 stretch:100 src index:2) source: https://addons.thunderbird.net/static/css/impala/fonts/OpenSans-Italic.ttf?c7dcce0 InstallTrigger is deprecated and will be removed in the future. impala-min.js:1:31868 Uncaught TypeError: tab.browser.contentWindow.showTab is not a function toImport chrome://messenger/content/mailCore.js:587 mailCore.js:587:39 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 _importMailMessages resource:///modules/ThunderbirdProfileImporter.jsm:588 _importServersAndAccounts resource:///modules/ThunderbirdProfileImporter.jsm:248 2 ThunderbirdProfileImporter.jsm:659 NS_ERROR_NOT_AVAILABLE WebGL context was lost. 2 Troubleshoot.sys.mjs:710:17

All Replies (7)

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I assume it was a zip file. If true, then I suggest you unzip it so that the profile is directly accessible. To activate in thunderbird, this URL may help: https://kb.mozillazine.org/Moving_your_profile_folder_-_Thunderbird If you need assistance, post back after the unzip, preferably with a screenshot of the profile so we will know exactly what is there. Thank you.

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David, Not sure what has to be unzipped. What I see is a profile folder. What exactly do I unzip. I see no zipped files.

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Okay, my misunderstanding. When you said 'import', I inferred the Thunderbird import for zipped profiles. Otherwise, the size of the profile is irrelevant. How did you import it? Can you do a screenshot of the profile and also one of the imapmail and mail folders? If you have a pure profile, there should be no errors in setting it up.

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I just selected import from the tools drop down menu. The system then prompts for a profile, either a saved one or one in a separate file. I selected the default profile and it asks what items to import at which I selected all items like messages and addresses.

I am using POP3, not IMAP.

Profile file is huge. What can I copy?

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I have a personal distrust of the import feature and prefer doing it manually, as that works.


- Thunderbird must be already installed but not running - copy the profile to c:\users\<yourid>\appdata\roaming\thunderbird\profiles (optional, you could copy anywhere, but this is the traditional place) - start thunderbird. if pane to create email account appears, close it - click alt key to show menu bar if not visible - click help>troubleshootinginformation - scroll down left side to 'profiles' and click 'about:profiles' -click 'create profile' - click next - enter short nickname for folder, such as MYPROFILE - click choose' button - locate and select your profile and click finish - on next pane, locate your profile and click the 'launch' button

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david, I think I may have found a promising profile, but it is a zipped folder. How do I unzip it?

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Windows has built-in unzip feature. Try rightclick and see if that option appears. There is also an excellent free unzip utility at

 https://www.7-zip.org/  that can do that.

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