It's possible to split PST mailboxes into different files located locally or over a network driver. The problem is that although a network driver may appear being a local drive (drive mapping) network drive not offers the same performance being a local one (i.e. C drive). Therefore Outlook may face problems to get hold of the PST file located on the network server understanding that may lead ultimately to corrupt PST file which demand a repair with scanpst.exe
If this kind of failure happens, it is possible to reinstate your PST file mailbox first with backup software which is daily backup inside your network storage. However, since the mailbox data may contain some crucial business data you could should not lose even a single day at work.
If restoring the mailbox data positioned in your inaccessible PST file is crucial, you can try and employ the Scanpst.exe utility. Scanpst.exe location is at your Outlook installation folder (It may seem beneath the default installation folder i.e. c:\program files). If you can't believe it is the very best is merely to perform the search program and discover the scanpst.exe directly.
Typical PST errors:
"The file F:\archive.pst is not a personal folders file."
(it is possible to replace the letter F with your own personal network drive letter).
Reason for the PST error:
The aforementioned error indicates that Outlook cannot read the PST database since it is corrupt. The file doesn't need valid database structure. Another possible cause is that you simply function not have network connection to the PST file. If so it's very simple to solve it and merely call your network administrator to repair it.
Please take into consideration that Outlook PST database file was not made to use slow connections for example network drives. In many cases the connection is slowing during saving data or file closing which in several times cause data lose and PST file corruption.
Can Scanpst.exe solve it?
Scanpst.exe is an extremely limited solution. Most of the time it fails but since it is a free tool you best run it first but don't forget, first rule prior to starting a recovery process is always backup. You will not like to damage the file a lot more compared to current state from it. So please produce a copy of the PST file and let scanpst.exe make an effort to fix the copy only.