Missing all files of a folder and the pst file cannot be repaired

All files under folder Inbox\TechSupport suddenly are missing.  The Folder Size window shows this folder has a size of 180719KB.

I used "C:\Program Files\Microsoft Office\Office15\SCANPST.EXE" to try to fix the post files a few times, the problems remains.  No matter how many times I run SCANPST.EXT on this pst file, it always find the following error:

Internal errors were found in this file. They must be repaired for this file to work correctly.

Here is the log:

Microsoft (R) Inbox Repair Tool
 2012 Microsoft Corporation.  All rights reserved.

Version 15.0.4667.1000


**Beginning NDB recovery

  **Attempting to open database

  **Attempting to validate header

  **Attempting to validate AMap

    !!AMap page <@416752640> has csFree of 7, but should have 255

  **Attempting to validate BBT

  **Attempting to validate NBT

  **Attempting to validate BBT refcounts

  **Attempting to validate header NID high-water marks

**Beginning PST/OST recovery

  **Attempting to recover all top-level objects

    **Store created by build: 15.4667

  **Attempting to walk all folders

  **Attempting to locate any orphaned folders/messages

  **Performing final HMP validation

  **Attempting to check top-level objects for consistency

  **Updating folder hierarchy

**Attempting to fix original file

  **Attempting to copy back BBT

  **Attempting to copy back NBT
Any tip to remedy this will be greatly appreciated.

January 31st, 2015 3:23am

The log changes a little bit every time I fix the pst file. Here is another one:

Microsoft (R) Inbox Repair Tool
 2012 Microsoft Corporation.  All rights reserved.

Version 15.0.4667.1000


**Beginning NDB recovery

  **Attempting to open database

  **Attempting to validate header

  **Attempting to validate AMap

    !!AMap page <@417006592> has csFree of 128, but should have 255

  **Attempting to validate BBT

  **Attempting to validate NBT

  **Attempting to validate BBT refcounts

  **Attempting to validate header NID high-water marks

**Beginning PST/OST recovery

  **Attempting to recover all top-level objects

    **Store created by build: 15.4667

  **Attempting to walk all folders

  **Attempting to locate any orphaned folders/messages

  **Performing final HMP validation

  **Attempting to check top-level objects for consistency

  **Updating folder hierarchy

**Attempting to fix original file

Free Windows Admin Tool Kit Click here and download it now
January 31st, 2015 3:27am

Here is another log:

Microsoft (R) Inbox Repair Tool
 2012 Microsoft Corporation.  All rights reserved.

Version 15.0.4667.1000


**Beginning NDB recovery

  **Attempting to open database

  **Attempting to validate header

  **Attempting to validate AMap

  **Attempting to validate BBT

  **Attempting to validate NBT

  **Attempting to validate BBT refcounts

    ??Couldn't find BBT entry in the RBT (8C044)
    ??BBT entry (928AE) has different refcount in RBT (3 vs 2)
    ??Couldn't find BBT entry in the RBT (92B02)

  **Attempting to validate header NID high-water marks

**Beginning PST/OST recovery

  **Attempting to recover all top-level objects

    **Store created by build: 15.4667

  **Attempting to walk all folders

  **Attempting to locate any orphaned folders/messages

  **Performing final HMP validation

  **Attempting to check top-level objects for consistency

  **Updating folder hierarchy

**Attempting to fix original file

  **Attempting to copy back BBT

  **Attempting to copy back NBT
I am clueless about meaning of the log's contents.

January 31st, 2015 3:31am

Hi Hong,

What's the total file size of your PST file? If the size exceeds the maximum size limit, it may cause unexpected error. If you are using an UNICODE personal folders (.pst), the default size limit is 50 GB.

In addition, we may try to create a new empty PST file and then copy the TechSupport folder to the new PST file to see the result. To create a new PST file in Outlook 2013, click File > Info > Account Settings > Account Settings, click Data Files tab, then click Add button...

To copy the TechSupport folder to the new PST file, right click the TechSupport folder, select Copy Folder, then select the newly created PST file and click OK.

Please let me know the result.

Regards,

Steve Fan

Forum Support

Free Windows Admin Tool Kit Click here and download it now
February 2nd, 2015 12:33am

Thanks a lot for the tips, Steve.

The pst file size is 389MB.  I compacted the folder two days ago as the last resort.

I created a new pst file yesterday just as you instructed, and copied all other folders to the new pst file, and everything has been working fine. However, I did not dare to copy TechSupport folder because I was afraid it would ruin the new pst file.

I copied TechSupport folder after reading your post, the folder in the new pst file still shows nothing.  The content must have been copied because the new pst file size is 405MB now. 

I ran "chkdsk /r" a few days ago, and it found some errors and corrected them.   I am wondering if this has anything to do with this Outlook problem. 

February 2nd, 2015 3:22pm

Thanks for the update, Hong.

If we copy some emails to TechSupport folder, are those emails still visible in the TechSupportfolder?

Although it doesn't look like a view problem, we may also try to open Outlook with /cleanviews switch to seek our fortune. To do this, exit Outlook, press Windows key + R to open the Run command, type outlook /cleanviews and press Enter. We may also try to search for the missing emails using Instant Search to see if there is any result.

In addition, we may also try to use the MFCMAPI tool to look into the TechSupport folder and check if we can see and open the missing emails. To do this, please follow the steps below:

1. Download MFCMAPI tool: http://mfcmapi.codeplex.com/

2. Exit Outlook and start MFCMAPI.exe.

3. Click Session > Logon, choose your profile and click OK.

4. Double-click the PST file that has this issue from the list.

5. In the opened new window, expand Root Container > Top of Outlook data file > Inbox.

6. Find and right-click the TechSupport folder under Inbox, select Open contents table.

7. In the opened new window, check if you can see your emails in the upper portion of the window. If so, double-click an item to see if you can open the email in Outlook window.

Please let me know the result.

Regards,

Steve Fan

Forum Support

Free Windows Admin Tool Kit Click here and download it now
February 3rd, 2015 8:37pm

Thanks a lot, Steve, for your persistent help.

Actually, moving some emails to the folder was the first thing that I tried, and those emails disappeared too.

I have just tried outlook /cleanview. It works!!!  Hallelujah!

Now I can see  1000+ emails in that folder.

February 3rd, 2015 9:06pm

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