- Exchange Server 2013 or Exchange Server 2016 is installed into an existing Exchange Server 2010 organization.
- You recently accessed Outlook Web App or Exchange Control Panel when your mailbox was on Exchange Server 2010.
- You move your mailbox from Exchange Server 2010 to Exchange Server 2013 or Exchange Server 2016.
Scenario 1: The Exchange Server client access service contacts a domain controller that does not have the latest user object attributes after the mailbox is moved.
Scenario 2: The Exchange Server client access service is using cached information for the mailbox location.
Scenario 3: Permission Inheritance is blocked on the user object.
Solution 1: Verify that Active Directory replication is completed by checking the user object's homeMDB attribute. This value should contain the DN value of the Exchange Server 2013 or Exchange Server 2016 mailbox database.
Solution 2: On Exchange Server 2013 or Exchange Server 2016, wait 30 minutes for the cache to clear or restart the MSExchangeOWAAppPool. Refer the following screen shot in Exchange Server 2013.
Note The client is also provided a cookie from the Exchange 2013 Client Access Server with the location of the backend server. This cookie is valid for 10 minutes. Restarting the MSExchangeOWAAppPool may not resolve the issue if you try to connect within 10 minutes of the mailbox move. In this scenario, you must remove cookies from your browser. To remove the cookies in Microsoft Internet Explorer, follow these steps:
- Go to Internet Explorer, open Internet Options.
- On General tab, click Delete.
- Select the Cookies and website data option, and then click Delete.
- Start ADSI Edit by clicking Start, click Run, type adsiedit.msc, and then click OK.
- Locate the user object in question, right-click the object, and then click Properties.
- On the Security tab, click Advanced.
- Click Allow inheritable permissions from the parent to propagate to this object and all child objects to re-enable permissions inheritance.
- Click OK two times to apply the change.
- Wait for Active Directory replication to propagate the changes, or force Active Directory replication if it is necessary.
If you want to access the Exchange 2010 ECP and your mailbox resides on an Exchange 2013 Mailbox server, use the following URL: https://
For more information about Exchange Admin Center, see Exchange Admin Center in Exchange 2013.