SecureAuth IdP version affected: All
The following error occurs when the Network Service account does not have write permissions to the 'C:\Windows\Temp' folder:
By default, the Network Service account is part of the 'NT AUTHORITY\Authenticated Users' group. To remedy this issue, please verify that the 'Authenticated Users' group is a part of the 'Users' group:
Next, verify that the 'Users' group has the following permissions set on 'C:\Windows\Temp':
Finally, verify that there is no GPO or Windows Scheduled Task causing the 'C:\Windows\Temp' directory to be removed and recreated with only 'C:\Windows' permission inheritance.