About this tag
Discussions on WindowsForum.com about OST files focus on Outlook offline data files used with Exchange or IMAP accounts. Common issues include Outlook creating a PST instead of an OST for IMAP accounts, converting OST files to PST after an Exchange account is deleted, recurring OST file corruption in Outlook 2007 across different PCs and OS versions, and methods to repair corrupt OST files beyond built-in utilities like scanost. Users also seek help locating OST files for backup in Windows 7, as the default folder is hidden. Troubleshooting often involves deleting the OST file or recreating the mail profile, but recurring corruption prompts deeper investigation.
  1. Q

    Windows 7 imap mail account creates .pst instead of .ost

    I have a weird thing going on in Outlook 2010. It creates a .pst instead of .ost. I've no idea why. The problem is that I cannot set that .pst as the default data file. The option is simply greyed out. I'm using Outlook 2010. Any ideas what's going on? Thanks
    • quas
    • Thread
    • 2010 data files default file email email accounts imap issues ost outlook pst
    • Replies: 4
    • Forum: Windows Software
  2. S

    Convert OST file to PST

    How can I convert an outlook OST file from a deleted exchange account to a PST without having to spend a fortune on a some conversion software. I have found a few programs that can do it but none of them work with Outlook 2003.
  3. M

    Re-occuring .ost file corruption

    We have a practice wide re-occuring issue in which users .ost files become corrupt. See error: "Unable to open default email folders. The file C:\\microsoft\outlook\outlook.ost is not an offline folder." We are on Outlook 2007 (12.0.6423.1000 SP2 MSO), office 2007. Occurs on different PC's...
    • medardtaber
    • Thread
    • 32-bit 64-bit advice corruption email error fix help issues office 2007 ost outlook software sp2 suggestions support users windows
    • Replies: 1
    • Forum: General Computing
  4. J

    Windows 7 Repair corrupt .PST & .OST files

    What methods exist to repair corrupt Outlook 2003 .PST & .OST files besides using the scanpst and scanost utilities? An Outlook 2003 user frequently gets messages when he launches Outlook 2003 that the data file is corrupt.
    • joshcald
    • Thread
    • corruption data files data recovery email error message file management maintenance method ost outlook pst repair scanost scanpst support troubleshooting utility
    • Replies: 12
    • Forum: Windows Software
  5. N

    Windows 7 How access Outlook files?

    I want to backup my Office 2007 Outlook .pst and .ost files. On WinXp they're under ... Application data .... in Documents and Settings. But on Win7, the D&S folder doesn't appear in Windows Explorer. It does show if you choose Tools -> Options -> View and select display hidden OS files. But...