Mayrell Posted June 13, 2017 Share Posted June 13, 2017 CCleaner Version: v5.31.6104 (64 bit) Thunderbird Version: 52.1.1 (32 bit)OS: Windows 10 (64 bit) How to reproduce: - Close Thunderbird (if open) - Backup your Thunderbird profile data from C:\Users\<Username>\AppData\Roaming\Thunderbird\Profiles to a secure location - Run latest CCleaner with "Last Download Location" checkbox enabled in Thunderbird application settings - Open Thunderbird What happens:- Thunderbird cannot access existing profile data and shows first startup wizard (no "broken profile files" info or anything) - Profile data is still there but somehow corrupted, Thunderbird still references correct profile folder but cannot "see" it for some reason - As soon as you overwrite profile data with your backup, everything works again Conclusion:The new "Last Download Location" setting somehow corrupts Thunderbird profile data. I checked with only this setting enabled, it is definitely the cause of the problem. Link to comment Share on other sites More sharing options...
alaGabba Posted June 13, 2017 Share Posted June 13, 2017 Same here https://forum.piriform.com/index.php?showtopic=48428 Link to comment Share on other sites More sharing options...
jstonepvr Posted June 13, 2017 Share Posted June 13, 2017 I can confirm this behavior on Windows 10, 64 bit Creator's Edition. Link to comment Share on other sites More sharing options...
Moderators hazelnut Posted June 13, 2017 Moderators Share Posted June 13, 2017 Please see here https://forum.piriform.com/index.php?showtopic=48428&do=findComment&comment=284145 Support contact https://support.ccleaner.com/s/contact-form?language=en_US&form=general or support@ccleaner.com Link to comment Share on other sites More sharing options...
Kerflot Posted June 13, 2017 Share Posted June 13, 2017 Same here on Windows 7 32bit. Accounts and profiles gone. Link to comment Share on other sites More sharing options...
swatbat2142 Posted June 13, 2017 Share Posted June 13, 2017 Same here on all versions of my Windows systems. Windows 10 Pro 64-bit, Windows 8.1 Pro 64-bit and Windows 7 Pro and Home 64-bit Link to comment Share on other sites More sharing options...
DooGie Posted June 13, 2017 Share Posted June 13, 2017 Happy to say I had recent backups for both Firefox and Thunderbird profiles. Link to comment Share on other sites More sharing options...
Moderators Nergal Posted June 13, 2017 Moderators Share Posted June 13, 2017 Be sure you've tried the patched version which should make sure this doesn't happen again (will not magically recreate your profiles though sorry) ADVICE FOR USING CCleaner'S REGISTRY INTEGRITY SECTION DON'T JUST CLEAN EVERYTHING THAT'S CHECKED OFF. Do your Registry Cleaning in small bits (at the very least Check-mark by Check-mark) ALWAYS BACKUP THE ENTRY, YOU NEVER KNOW WHAT YOU'LL BREAK IF YOU DON'T. Support at https://support.ccleaner.com/s/?language=en_US Pro users file a PRIORITY SUPPORT via email support@ccleaner.com Link to comment Share on other sites More sharing options...
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