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Problem recovering deleted item - Outlook 2010 , Exchange 2010 SP 1 Rullup 3v3

Posted on 2012-03-27
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Last Modified: 2012-09-13
Outlook 2010
Exchange 2010 SP1 RU 3 v 3

User opens deleted item recovery in Outlook 2010 and attempts to recover any message and receives the following error message -
Outlook was unable to recover some or all of the items in this folder. make sure you have the required permissions to recover items in this folder, and try again. If the problem persists, contact your administrator.

When having the user attempt a recovery of the same message using Outlook Web access the message restores as expected, no error.
Tried local administrator rights added to the workstation (saw this reported on a forum ) , also confirmed user’s mailbox had self listed in the Full Access permissions.

Looking for any thoughts on this. I checked and confirmed the "SELF" account was on the mailbox rights.
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Question by:markpalinux
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NimeshPanchal earned 500 total points
ID: 37772845
This can occur due to the default limits configured on the Exchange Server for the number of items that can be opened by a single MAPI session. In the example above the MAPI session was trying to open more than the default 500 allowed objects of type “objtFolder” (in other words, Folders).

The solution is provided by Microsoft in this support article, which refers to Exchange Server 2003 but applies to later versions as well.

    Open Regedit and navigate to \\HKEY_LOCAL_MACHINE \SYSTEM\CurrentControlSet\Services\MSExchangeIS\ParametersSystem
    If the key “MaxObjsPerMapiSession” does not already exist, right-click on ParametersSystem and create a new key of that name.
    Create a new DWORD value with a name matching the object type in the event log error on your server (eg “objtFolder” in this example)
    Set the DWORD value to a decimal value higher than the default. For the case above I first tried 1000, then 10000 when that did not work.
    Wait 15-30 minutes for the registry change to take effect, then retry the Outlook operation.

You may find that you need to try gradually increasing the value until you can successfully recover the items in Outlook. You may also find that after you’ve removed one limit that another object type’s limit may also suddenly come into play, so always check your event log for new errors identifying additional object types that you may need to add a registry value for.

After you’ve successfully recovered the Outlook items revert the registry keys to their default values (listed in the Microsoft support article above) to prevent issues with server resources in the future.
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by:markpalinux
ID: 38394881
Thanks for your answer. The user had come back and said the message wasn't needed any longer. I would hvae loved to spend more time on this but other issues had come up.
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