When opening multiple EV Shortcuts at the same time in OWA most will open but a few will error with "The operation has timed out"
Exception sending request to restore item: System.Net.WebException: The operation has timed out
The Operation Timed out error is from Exchange server EV Extension and not from the EV server or the EV restore
Symantec Corporation has acknowledged that the above-mentioned issue is present in the current version(s) of the product(s) mentioned at the end of this article. Symantec Corporation is committed to product quality and satisfied customers.
Please be sure to refer back to this document periodically as any changes to the status of the issue will be reflected here.
EV 9.0.3 with Exchange 2010