How is a backup completed when a ".zip" error terminates the process?
The backup process for Thunderbird almost completes, but fails due to "Zip file could not be opened" and "Warning: Backup's file isn't valid. Backup has failed." (The Firefox backup worked fine.)
MozBackup 1.4.10
The backup process for Thunderbird almost completes, but fails due to "Zip file could not be opened" and "Warning: Backup's file isn't valid. Backup has failed." (The Firefox backup worked fine.)
MozBackup 1.4.10
All Replies (2)
I suggest you visit the Mozbackup author site and read the warning that the software is broken and he does not have time to fix is.
This tells you how to backup your profile. https://support.mozilla.org/en-US/kb/profiles-tb