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Microsoft Windows OS (XP/NT/Vista/Windows 7/8/9/10) Forum

How many .pst files have you generated?
Outlook and the dreaded message store maximum...

 3:50 pm on May 21, 2008 (gmt 0)

Just when you think you have your Auto Archive settings just right...

"Outlook cannot perform the task. The message store has reached its maximum of 1.6G..."

Time to create a new .pst file, this will be what, #24 I believe. Lots of "real" email coming through these days. Thank you Barracuda and SpamBayes.

So, how many .pst files do you have in your closet?



 10:15 pm on May 21, 2008 (gmt 0)


Most of them are archived history though. My current year .pst is at 800MB, not quite halfway through the year. Hmm, at this rate I just may hit the threshold!


 11:06 pm on May 21, 2008 (gmt 0)


  • Outlook 97~2003 = 2 GB
  • Outlook 2003 & 2007 Unicode .pst = 20 GB

    I've read that the Unicode format of a PST file can potentially be extended to a theoretical maximum size of 33 TB.

  • coopster

     4:21 pm on May 22, 2008 (gmt 0)

    Excellent news. I can go to 20GB!


     5:02 pm on May 22, 2008 (gmt 0)

    :( Not me. I went through the instructions and unfortunately at Step 4 I'm lost because those folders do not exist.


     12:30 am on May 23, 2008 (gmt 0)

    It sounds like you dont't have a Unicode PST. I normally create a brand new PST and then drag and drop my old data into it.

    MS suggests that you import the data:

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