Error opening device E/A device error Code 1117

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Hello,
I’m a newbie with Cryptomator. Unless it works fine for me but there’s a problem I can’t solve:

I setup my vault in a OneDrive folder and I’m able to get access to my files. BUT some files seem to be corrupted. I can’t open them. I can’t copy them. I even can’t delete them.

Error opening device E/A device error Code 1117

I’m wondering because this refers only to some files. I’m able to open some xls-files but others are blocked.

Is there anybody out there with an idea how to solve this issue?

Thanks
Ralf