The Redmond giant issued a warning for early customers of Windows Home Server, according to which saving certain files on the home server would lead to the total compromise of the files.

The warning was issued on Thursday, December 20 and it came as a result of several complaints from WHS users. When some programs are used inside Windows Home Server to save or edit program-specific-files, they tend to corrupt the data when saved on the WHS.

These programs are Windows Vista Photo Gallery, Windows Live Photo Gallery, Microsoft Office OneNote 2007, Microsoft Office OneNote 2003, Microsoft Office Outlook 2007, Microsoft Money 2007, SyncToy 2.0 Beta.

On the official WHS forum users have also signaled the existence of incompatibilities between the home server software and Torrent applications, Intuit Quicken, and QuickBooks program files.

Microsoft strongly advises customers to make a back-up of the files stored on the WHS or to avoid using the aforementioned applications to save or to edit program-specific files that are later stored on a Windows Home Server-based system.

The software and hardware giant is currently investigating the problem and will post more info when that info will be available.

However, this isn’t the first time corrupt files-problems emerge. Back in October Marc Moon, from the WHS department inside Microsoft, had issued another warning, about the addition to WHS shared folders of data files that contain NTFS alternate data streams. If someone was trying to access the WHS-stored files from a home computer with an active anti-virus, then the computer would simply not recognize the file format.

Additionally, files such as executable files (.exe) and files that have an .avi extension would not appear correctly in Windows Explorer, and the opening of such files would be impossible.