Upgrade to Windows 11 crash blue screen Stop Code: REGISTRY_FILTER_DRIVER_EXCEPTION What failed: file_protector.sys
Hi all,
I'm facing the following issue:
Trying to upgrade from windows 10 to windows 11 both with windows update or Windows 11 installation assistant crash at 85% with blue screen and the following error:
Stop Code: REGISTRY_FILTER_DRIVER_EXCEPTION
What failed: file_protector.sys
I discovered that file_protector.sys is part of your amazing product I'm using: Acronis Cyber Protect Home Office build 39703 that appears to be the latest available
Can you please help me to fix the issue so I can perform the upgrade?
Regards


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Hi Steve,
sorry for the later of my reply.
I've opened a support case with Acronis but nobody contacted me about that for the moment, I think it's strange since it was 1 week ago. Should I open a new one?
That was my plan to too, I'm waiting for an external HD to perform a backup, then uninstall Acronis and try again to upgrade.
I was wondering if perhaps ASZ with password could be the cause of my problems
Regards
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Gianluca, I would suggest waiting on your support case rather than opening a new one.
I don't think that ASZ with password should cause this issue as that is a legacy feature unchanged for a very long time.
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Hi Steve,
thanks for the suggestion, I will wait for the feedback from the support before to follow any other corrective action
Regards
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Hi Steve,
I'm surprised that support is slow and providing me the troubleshoot of my issue, so I procedeed by my onw.
I discovered that is not a problem related to Acronis. I had to uninstall Comodo Internet Security perform the upgrade and reinstall the software later.
Regards
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Gianluca, thanks for the update! That is interesting that it was CIS causing the upgrade issue as I was a long time users of CIS but stopped using it on Windows 10 due to the much improved Windows Defender being fully integrated, but still have it on some older Windows 7 systems!
The old PC's are not capable of going to 10 let alone 11, so no danger of hitting the same issue!
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Hi Steve, I gave CIS ago since it was stopping my windows 10 to be patched to 20H2 build so I know CIS is really effective but also produce some false positive some time. I like to much CIS as it has unique features that are missing in their concurrent
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