How can I get around "error 0x80070522" when creating files in the root of the C drive (C:\)?
Solution 1:
It's a security setting in UAC. Basically, even if a user has permission to write files to the drive, UAC still prevents it since UAC has a rule to prevent non-admins to writing to the root of C:
Only reasonable workaround is to disable UAC, which then creates a security risk.
Best bet is to have them save to another location.