System Restore unsuccessful due to quarantined files [Issue: #257]

Since installing CIS 5 64bit, System Restore cannot revert the system from within Windows 7 64bit, but only in Safe Mode.


We would very much appreciate it if you would submit your bug report in the format requested here. For the reasons why see below.

Many thanks in anticipation


Bugs/issues can be impossible or very time consuming to fix if not well described. Since CIS is free, development time is limited. So if you want your issue fixed, please use the format below to describe it.

To avoid clutter, issues not described in the format below your post will not be moved to the ‘moderator verified’ issues topic. This means that the developers may not look at it.

Windows Error Message:

"System Restore did not complete successfully. Your computer’s system files and settings were not changed.


System Restore failed while deleting the following file/directory:

Path: C:\Program Files\COMODO\COMODO Internet Security\Quarantine\clt.exe

An unspecified error occured during System Restore. (0x80004005)"

clt.exe is Comodo Leak Test.

If I try to open the Quarantine folder in C:\Program Files\COMODO\COMODO Internet Security\Quarantine, access is denied.

In Scanner Settings in CIS 5, “Automatically quarantine threats found during scanning” is enabled.

The bug/issue

  1. What you did: Attempted to restore my computer using Windows System Restore.
  2. What actually happened or you actually saw: System Restore was unsuccessful and the above error message was displayed.
  3. What you expected to happen or see: System Restore to restore my computer successfully.
  4. How you tried to fix it & what happened:
  5. Details (exact version) of any software involved with download link:
  6. Any other information you think may help us:

Files appended

  1. Screenshots illustrating the bug:
  2. Screenshots of related event logs or the active processes list:
  3. A CIS config report or file.
  4. Crash or freeze dump file:

Your set-up

  1. CIS version & configuration used: 5.0.162636.1135. Configuration set to Internet Security.
  2. Whether you imported a configuration, if so from what version:
  3. Defense+ and Sandbox OR Firewall security level: Defense+ - Safe Mode. Firewall - Custom Policy. AntiVirus - Stateful. Sandbox - Enabled.
  4. OS version, service pack, no of bits, UAC setting, & account type: Windows 7 64 bit Home Premium
  5. Other security and utility software running:
  6. CIS AV database version: 6132

Thanks for rewriting the report :-TU

This is evidently STILL an issue in CIS 5.12.256249. THREE YEARS after this report.

It’s a fundamental problem denying users the use of an essential recovery tool for which there is no adequate replacement.

If there is a proven workaround which will allow me to do System Restores can somebody please tell me?

Please use the latest version which you may download here.;msg720010#msg720010

Yes System Restore does work with the latest version.

Thank you