Exchange 2003 to Exchange 2010 Mailbox Move Fails with “Error: Property Expression Isn’t Valid

Microsoft Exchange

We were moving our mailbox from our old Exchange 2003 server to a new Exchange 2010 server, we moved the vast majority of people no problems, however there were about 10 or so users who we had this error with.

Problem:

“Property expression <blah> isn’t valid. Valid values are: …..”

Now the user’s mailbox on Exchange 2003 worked fine, we could access and change any of the properties via ADUC on Windows 2003.

Symptoms:

We couldn’t move the mailbox or edit any of its properties in Exchange 2010 management tools, we just got an error message saying similar to above about an invalid character.

Solution:

Upon opening the ADUC and checking for the invalid fields we found that the users “Alias” field under “Exchange General” tab was set to the users email address containing an @ (at symbol), this was what was causing the issue. When I changed the “alias” field just to be the users name (rather than the email address) I could move the folder and access the properties no problem.

Leave a Reply

Your email address will not be published.