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  1. naitam
    October 3, 2020 @ 8:26 am

    i am unbale to locate the pst @ Outlook 2007: HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Outlook\PST
    my pst folder is kept in another drive
    unable to increase the folder size. pelase advsie

    Reply

    • lakonst
      October 3, 2020 @ 9:40 am

      Read carefully the article's note: "IF the PST key doesn't exist under Outlook key, you have to create it manually."

      Reply

  2. Adrianna
    May 8, 2019 @ 8:22 am

    I have done all steps but how do I know whether the inbox storage has been increased?

    Reply

    • lakonst
      May 8, 2019 @ 9:11 am

      @Adrianna: After a few days you will find that the size of the Outlook PST data file will be increased.

      Reply

  3. Rob
    January 8, 2019 @ 3:28 pm

    Worked great – thanks

    Windows 7, Outlook 2007

    Reply

  4. Jessica Sun
    December 26, 2018 @ 11:39 am

    Hi, Lakonst,
    I followed your process and tried to enhance their size, but it was not working. I checked again, but did not find the solution. Mine is outlook 2016. Can you help me to find the solution.
    At the right pane at PST was showed :
    EnableMarch2018BestBodyFix REG_DWORD 0x00000000 (0)
    EnableNewCorruptionUx REG_DWORD 0x00000001 (1)
    MaxLargeFileSize REG_DWORD 0x00019000 (102400)
    WarnLargeFileSize REG_DWORD 0x00017c00 (97280)

    Reply

    • lakonst
      December 27, 2018 @ 10:15 am

      @ Jessica Sun: I cannot imagine why this happens. The "numbers" are correct. Have you upgraded Office? If you have upgraded to Office 2016 from a previous Office version, then you must uninstall the old version before installing the latest one.

      Reply

      • Jessica Sun
        January 8, 2019 @ 5:43 am

        Hi lakonst,
        It was very nice to get your reply. I has checked there is not old version in my PC. But, I got to know my outlook belong to "ost" instead of "pst". As that, I tried to create "ost" and delete "pst" manually. Unfortunately, it was not still working.
        I would like to check if something else should be modified. Would you please let me know how check from my outlook if the new file should be set up"DWORD" or "QWORD", and "Hexadecimal" or "Decimal" under Base.

        Reply

        • lakonst
          January 8, 2019 @ 10:34 am

          @Jessica Sun: Your account is IMAP? At this case the best procedure is the following:
          1. Close Outlook
          2. Delete the .ost file.
          3. Open Outlook and let it to rebuild its cache.

          Reply

  5. ioannis paccioti
    November 18, 2018 @ 7:42 am

    Guys,

    Thank you for the information above. I did it, I increased my limit from 2GB to 30GB. I am so grateful. I have donated £10 for this. Please keep such good work up. Very grateful again. Bless you!

    Kindests regards
    John Paccioti

    Reply

  6. itsupport
    June 15, 2018 @ 9:01 am

    I m using windows 7 professional – 64 bit and ms office 2010.
    PST file size is already 35 GB
    I facing problem is outlook hang when i one mail drag to another folder.
    i follow all procedure as per your suggestion but still same issue persist.

    Reply

  7. vladica
    December 22, 2017 @ 2:53 pm

    WoW!Thank you soooo much for this!

    Reply

  8. Asit
    September 6, 2017 @ 12:58 pm

    it doesn't work for me, I am using 2013 professional plus. Mail box size remains same as earlier.

    Reply

    • lakonst
      September 6, 2017 @ 1:07 pm

      @Asit: Don't expect to see the size to be increased directly. The size will be increased gradually according the usage.

      Reply

  9. Amin
    August 3, 2017 @ 7:37 pm

    I have the company laptop running Outlook 2016, I've followed all the steps, but seems the space of the emails still showing the same. Can you help?

    Reply

    • lakonst
      August 4, 2017 @ 5:29 pm

      @Amin: Follow carefully the instructions again and make sure that you modify the registry at this path: HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\PST
      p.s. If have you upgraded to Office 2016 from a previous Office version, then you must uninstall the old version before installing the latest one.

      Reply

  10. Myo
    June 20, 2017 @ 10:15 am

    Many Thanks :)

    Reply

  11. Myo
    June 20, 2017 @ 5:10 am

    I'm using Window 7 and Outlook 2010. Have followed all the steps but the size still remains at 1.7 GB (this is company's mail address which got 2 mailboxes in one, direct mail and central mail)

    Reply

    • lakonst
      June 20, 2017 @ 8:45 am

      @Myo: The steps are not working if you 're using IMAP. You have to contact your email administrator.

      Reply

  12. JJ
    May 23, 2017 @ 10:50 pm

    That works, so easy. Thank you!

    Reply

  13. Killian
    May 8, 2017 @ 12:46 pm

    Have followed all of these steps for Outlook 2016 but the size limit still remains at 2 GB.

    Reply

    • lakonst
      May 8, 2017 @ 2:33 pm

      @Killian: In Outlook 2016 the default size limit is 50GB so you must specify a size over 50GB.

      Reply

  14. fazil
    April 23, 2017 @ 2:50 pm

    In the path given as Outlook 2007: HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Outlook\PST , I could not find outlook folder under Outlook 2007: HKEY_CURRENT_USER\Software\Microsoft\Office\12.0 .
    But there is one outlook folder under the office tab, i added both keys in that .But did nt work for me

    Reply

    • lakonst
      April 24, 2017 @ 8:37 am

      @fazil: At this case you have to create the Outlook folder and then (under the Outlook folder) create the PST folder.

      Reply

  15. Andre
    April 9, 2017 @ 7:27 pm

    One of the simplest example. Thanks.

    Reply

  16. Hercules Strydom
    January 23, 2017 @ 10:58 pm

    perfect. thanx. works a charm.

    Reply

  17. Sam
    December 23, 2016 @ 10:15 am

    Even though it doesn't work for me, thank you guys.

    Reply

  18. sudheesh
    November 12, 2016 @ 1:14 pm

    I have 20GB PST file from outlook 2010 , i have for mated my PC and reinstalled with office2013 , configured my outlook and attached the pst file also but i can see only 500 mails that is only 2013 years mails only , i am not able to see 2014,2015,2016 mail …..
    please help me ….

    Reply

    • lakonst
      November 13, 2016 @ 10:31 am

      @sudheesh: Use the File > Import wizard to import the "old" PST file into Outlook.

      Reply

  19. RV
    November 8, 2016 @ 4:43 am

    @Jonas: You may try to delete the OST file that causing the problem (or you can make a backup of it). Please make sure that your Outlook is closed while doing this.

    Reply

  20. Jonas
    April 7, 2016 @ 12:23 pm

    I have followed the guide and it still says 2GB limit

    Reply

    • Alex Lobozzo
      June 7, 2016 @ 5:53 pm

      If you are using any office version OLDER than Office 2007, it will not recognize any pst file sizes bigger than 2gb. the procedure above is very well explained, but it is ONLY for Office 2007 or newer

      Reply

  21. Jonas
    April 7, 2016 @ 6:17 am

    Hi,

    When I check my account info in Outlook it still say's 96% full (2GB limit)
    Any advice?

    Reply

    • lakonst
      April 7, 2016 @ 9:44 am

      @Jonas: Follow the instructions and increase the limit.

      Reply

      • Jonas
        April 7, 2016 @ 12:23 pm

        I have followed the guide and it still says 2GB limit

        Reply

        • lakonst
          April 7, 2016 @ 5:57 pm

          @Jonas: This is strange. Perform all the steps again and ensure that you have setup the correct values at the correct keys.

          Reply

  22. RK
    April 4, 2016 @ 9:44 am

    Thanks a lot, you saved me from big issues.
    All the best to you.

    Reply

  23. RK
    April 4, 2016 @ 9:33 am

    Wonderful article. This has really saved me from big problem
    I could successfully increase the outlook capacity.

    Thanks a lot to you guys…….

    Reply

  24. Tica
    April 3, 2016 @ 5:32 am

    You guys are computer angels! I followed your instructions on how to increase my Outlook memory as I was max'd out… it was easy to follow, fast and it worked! The additional steps if my settings didn't have the PST and the two DWORD values… that came in handy. THANK YOU SO MUCH for your detailed and helpful instructions, your time and expertise in providing this site for everyone to use.

    Reply

  25. AbdMassih
    March 16, 2016 @ 8:47 am

    Thanks a lot for this valuable information

    Reply

  26. vikram
    February 24, 2016 @ 8:11 am

    items are still being indexed 2010 in windows 8.1.

    how to resolve this error as i am getting after 2-3 days.

    i tried everything scanpst,rebuild & also created new profile but indexing in old post is being occurred but still not resolved.

    Reply

    • lakonst
      February 24, 2016 @ 10:05 am

      @vikram: Try to rebuild index or try to create a new profile and then import the OLD PST file.

      Reply

  27. Sandra Wilson
    September 15, 2015 @ 11:08 pm

    How can we add a new folder in outlook 2007? could any one help me….

    Reply

    • lakonst
      September 17, 2015 @ 12:46 pm

      @Sandra Wilson: Right click at (e.g.) INBOX Folder at the left pane > New Folder.

      Reply

  28. Joe Martin
    August 6, 2015 @ 11:49 am

    Thanks for this contribution.
    When I drill down I only get as far as HKEY_CURRENT_USER\Software\Microsoft
    Beyond that the folders are 'SystemCertificates' or 'Windows', not 'Office'.

    Many thanks

    Reply

  29. Ralph
    June 19, 2015 @ 7:59 am

    1) if more than 1 pst file, the maximum file size is for each files or for total ?
    2) any limit for the number of pst files ?
    thanks

    Reply

    • lakonst
      June 19, 2015 @ 5:24 pm

      @Ralph: 1) For each 2) I don't know if there is any limit for the number (I suppose no limits, but you 'll have performance problems).

      Reply

  30. hrmf`
    May 5, 2015 @ 4:47 pm

    I don't even have an office folder at either of those locations in my registry

    Reply

    • lakonst
      May 6, 2015 @ 9:13 am

      @hrmf: Are you sure? what Windows and Office version you have?

      Reply

  31. Peetah
    March 4, 2015 @ 3:16 pm

    I tried this, but the inbox still gives error when passing 2500emails. What can cause this ? I am using w7.

    Reply

    • lakonst
      March 4, 2015 @ 5:36 pm

      @Peetaη: what is the error?
      Try this: Close Outlook and then find and run the "scanpst.exe" tool (from: %programfiles%\Microsoft Office\Office12\scanpst.exe). When Scanpst tool opens, click Browse, find your "Outlook.pst" file. (Commonly is stored in "%USERPROFILE%\Local Settings\Application Data\Microsoft\Outlook\" folder) and then click "Start". If errors found check the "Make a Backup…" checkbox & click "Repair".

      Reply

      • Prashanth
        January 4, 2016 @ 9:57 am

        Repair is completed successfully still the size is 1GB only. I am on outlook 2013.

        Reply

  32. Aryo
    February 27, 2015 @ 5:29 am

    hi..
    i don't have PST folder.
    2007 version
    and how about if the .pst file is at different location? not in the default location again..

    thanks a lot

    Reply

    • lakonst
      February 27, 2015 @ 7:05 pm

      @Aryo: You can Create the PST folder. The location has no importance.

      Reply

      • Aryo
        March 5, 2015 @ 5:46 am

        hi, lakonst..

        I have a question, whether there is an alarm or reminder application to send information if the size of the outlook.pst file approaching the maximum quota..because in my company often encounter problems such as open outlook took a long time, the outlook is often "not responding" apparently because of the size of the maximum outlook.pst

        thank you for answer..
        Aryo

        Reply

  33. Rob
    December 4, 2014 @ 2:02 pm

    I don't have PST folder, please advise. 2010 version

    Reply

    • lakonst
      December 4, 2014 @ 5:22 pm

      For Outlook 2010 the registry key is: HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Outlook\PST

      Reply

    • Akshay Gaikwad
      May 18, 2017 @ 8:51 am

      then you have to create it manually in right click in outlook file then new type name as PST

      Reply

  34. usama
    September 11, 2014 @ 11:29 am

    thanks alot
    really appreciating your excellent contripution and sharing iformation

    Reply

  35. vaka
    July 1, 2014 @ 7:07 pm

    OMG¡¡ SAVED¡¡

    THX A LOT KONSTANTINO¡¡

    Reply

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