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Unexplained Errors in Event Log on Boot
I have four unexplained event log error messages every time I boot Windows 10, which are puzzling me and I haven't been able to resolve them.
Windows 10 Pro 22H2 x64 build 19045.4046.
The first one, which repeats twice, says -
AppContainer profile failed with error 0x80070005 because it was unable to delete folder C:\WINDOWS\system32\config\systemprofile\AppData\Local\Packages\microsoft.windows.fontdrvhost or its contents.
The third one then says -
CreateAppContainerProfile failed with error 0x800700B7 because it was unable to create folder C:\WINDOWS\system32\config\systemprofile\AppData\Local\Packages\microsoft.windows.fontdrvhost.
The last one then says -
CreateAppContainerProfile failed for AppContainer onecore\ds\security\gina\profile\profext\appcontainer.cpp Line:1376 S-1-5-18 microsoft.windows.fontdrvhost with error 0x8007000A.
Error 0x80070005 seems to be the ever-unpopular "Access is Denied" message.
Error 0x800700B7 seems to be the "cannot create xxx because it already exists" message.
That would of course make sense if the folder concerned couldn't be deleted or over-written.
Error 0x8007000A seems to be "The Environment is Incorrect".
The folder in question is present where it says it is.
I can delete it myself without any problems.
If I delete it and reboot the first two error messages change to -
DeleteAppContainerProfile failed with error 0x800706BA because it was unable to unregister with the firewall.
Error 0x800706BA seems to be "The RPC server is unavailable."
All the necessary services seem to be running though.
Resetting the firewall makes no difference.
The third message about it being unable to create the folder is then the same as before.
However, the folder has been recreated.
I even went as far as doing a repair install of Windows, but it made no difference, the errors are still there.
I also reset the file permissions as it looked like an access problem, but again no difference.
There are actually very few references to microsoft.windows.fontdrvhost in the file system or the registry.
In fact the registry only contains references to the problem folder, nothing else, at -
HKEY_USERS\.DEFAULT\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.fontdrvhos t
and at -
HKEY_USERS\S-1-5-18\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.fontdrvhos t
Anyone any ideas how to get rid of these errors?
They don't seem to be causing any malfunctions, it's just annoying!
Research references the User Mode Font Driver Host, fontdrvhost.exe, which seems to be running fine, and all the functions relating to fonts seem to be working OK.
Thanks, Dave.
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