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Error: Well this is embarrassing. Firefox is having trouble recovering your windows and tabs..........

  • 5 replies
  • 6 have this problem
  • 6 views
  • Last reply by cor-el

Bocales
Bocales

I only get this error when accessing Firefox. Other browsers work okay. This happened upon the last win10 update.

I only get this error when accessing Firefox. Other browsers work okay. This happened upon the last win10 update.

Chosen solution

This can happen if you use CCleaner to clear Firefox's session data. So try to remove Session for Firefox in CCleaner if you use this software. Current Firefox releases compress the sessionstore files with LZ4 compression (.jsonlz4 file extension) and CClceaner doesn't know about this compression.

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All Replies (5)

Shadow110
Shadow110

Please consider turning on send info to Mozilla before posting a question. This helps us help you.

Read this please and see if there is a report to send. https://support.mozilla.org/en-US/kb/firefox-crashes-asking-support

You're running version 26 of Flash and it is a security risk. Please update to Flash Player Version: 27.0.0.183 https://get.adobe.com/flashplayer/otherversions/ Step 1: Select Operating System Step 2: Select A Version (Firefox, Win IE . . . .) Note: Other software is offered in the download. <Windows Only>

Note : Firefox 56.0.2 is current release You're running 56.0 so it says. https://www.mozilla.org/firefox/all/ Full Version Installer Note : Firefox 57 Quantum release date Nov 14th https://www.mozilla.org/en-US/firefox/quantum/ Note : Legacy Extensions will be disabled and or removed.

Please let us know if this solved your issue or if need further assistance.

guigs
guigs

This warning will come up after an update or a crash. If you open up a new window and type in about:sessionrestore, the session back up file will load on that page.

You may also be able to check History > Show All History

The sessions backups folder for your profile can be accessed from about:support and clicking on the profile folder. Is there a file with a recent timestamp? That might be the last session, make a copy.

For troubleshooting purposes, did your following session restore the windows and tabs?

cor-el
cor-el
  • Moderator

Chosen Solution

This can happen if you use CCleaner to clear Firefox's session data. So try to remove Session for Firefox in CCleaner if you use this software. Current Firefox releases compress the sessionstore files with LZ4 compression (.jsonlz4 file extension) and CClceaner doesn't know about this compression.

guigs
guigs

@corel, so those supporting the thread can also learn what may have happened here, can you confirm what might be causing the session to not restore?

Is it the method of restoring, the encryption, the change from the last update?

Thanks, Rachel

cor-el
cor-el
  • Moderator

jscher2000 thinks that this might be related to Firefox changing from uncompressed sessionstore files to compressed .jsonlz4 files that CCleaner currently can't handle and thus corrupts the file when CCleaner is set to clear Firefox session data.