cloud drive backup 801

I continue to get 801 errors on files when backing up.  If I can't depend on the backup, it is no use to me.

I have called the support number.  Their "fix" is to rename the file.  That is not always possible and am I assured that it won't happen again in the future with a different file?  I have an idea.  Fix your software.  Obviously this is an issue because I see many people ask about it.