CauseStarting from POA 5.5 permissions for standard folders on Windows shared hosting servers were tuned up (see http://kb.sp.parallels.com/en/114277 for more details). In particularly Read/Write permissions were denied for Domain/IISAnonUsers on C:\Windows folder.
ODBC Microsoft Access Driver tries to create some files in temporary directory C:\Windows\Temp under DOMAIN\i<SubscriptionID> which is member of group Domain\IISAnonUsers.
Need to remove all DENY permissions for Domain/IISAnonUsers on C:\Windows folder for a web server with such configuration. To do that login to the web server under Administrator account and perform the following command:
icacls c:\windows /remove:d DOMAIN\IISAnonUsers
Where DOMAIN is placeholder for actual domain.