Event ID 9875 source MSExchangeIS Mailbox Store error

Original KB number:   3033272


You may get errors 9875 in the event log:

Log Name: Application
Source: MSExchangeIS Mailbox Store
Event ID: 9875
Task Category: Content Indexing
Level: Error
Keywords: Classic
User: N/A
Unexpected error "DOC_TOO_HUGE: There are not enough resources to process the document or row" occurred while indexing document.
Mailbox Database: DB01
Folder ID: 2ec8-57936CCC
Message ID: 2ec8-20C5D9AAAA
Document ID: 1447155777
Error Code: 0x8004364a

Event Xml:

<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
        <Provider Name="MSExchangeIS Mailbox Store" />
        <EventID Qualifiers="49198">9875</EventID>
        <TimeCreated SystemTime="2014-12-08T20:45:49.000000000Z" />
        <Security />


Typically this event is logged if there is a recurring meeting that happens often, say once a day and that meeting has no end date or some end date far into the future. If an exception is made to a recurrent meeting, a modified occurrence attachment is created. The only resolution is to delete the meeting and recreate it and give it an end date not more than a few months in the future. In order to find the offending meeting, use the following action below in the resolution section. Then delete the meeting.


  1. Run Exfolders tool and Export the FIDs from the server. To do so, perform these steps:

    1. Download the file ExFolders_SP1.zip.

    2. Exact files, place the file ExFolders.exe in the server's Exchange \bin folder.

    3. Import registry key TurnOffSNVerificationForExFolders.reg to the system.

    4. Double select ExFolders.exe to open the ExFolder Tool, select File on menu bar, and choose connect.

    5. Select Mailbox type, select connected by Database, select a Global Catalog to connect, select the database <database in question>, then select OK.

    6. In the left pane of Exfolder window, select the top folder Mailbox, select Tools on the menu bar, choose Export Folder Properties, choose Selected folder and subfolders, input C:\FolderID.txt in the Output file box, only check the ptagPID: 0x67480014 property and leave the other properties unchecked, and then select OK.

  2. Go to C:\ and open the file FolderID.txt, search through the list of FIDS looking for the mailbox and folder associated with the Folder ID in the event.

  3. Run Exfolders and open the mailbox that contains the folder. To do so, please repeat the steps d and e in Step 1 and navigate to the affected mailbox in the left pane of ExFolders window.

  4. Select the folder associated with the folder ID (which you found in step2) in the event. On the Right-hand side, select all the contents of the folder.

  5. Select Tools on the menu bar, choose Export Item Properties, input C:\MessageD.txt in the Output file box, input ptagMID : 0x674A0014 in the box at the bottom, select Add property to list, then select OK.

  6. Go to C:\ and open the file FolderID.txt, you will have a searchable list of Message IDs for messages in the affected folder. Look for the message associated with the Message ID in the event.

  7. Open the affected mailbox using Outlook, delete the message we found in step 7 and check the issue again.

You might have to repeat all the steps if you are getting multiple 9875 events with different folder and message IDs.