I am currently working on setting a hybrid deployment between Exchange 2010 SP3 and Office365 . I have finished all the required steps prior moving mailboxes to the cloud , but when I tried to perform OnBoarding move I keep getting the following error :
Error: MigrationTransientException: The call to 'https://mail.domainname.com/EWS/mrsproxy.svc mail.domainname.Com (14.3.123.2 caps:05FFFF)' timed out. Error details: The request channel timed out while waiting for a reply after 00:00:48.9391932. Increase the timeout value passed to the call to Request or increase the SendTimeout value on the Binding. The time allotted to this operation may have been a portion of a longer timeout. --> The request operation did not complete within the allotted timeout of 00:00:50. The time allotted to this operation may have been a portion of a longer timeout. --> The call to 'https://mail.domainname.com/EWS/mrsproxy.svc mail.domainname.Com (14.3.123.2 caps:05FFFF)' timed out. Error details: The request channel timed out while waiting for a reply after 00:00:48.9391932. Increase the timeout value passed to the call to Request or increase the SendTimeout value on the Binding. The time allotted to this operation may have been a portion of a longer timeout. --> The request operation did not complete within the allotted timeout of 00:00:50. The time allotted to this operation may have been a portion of a longer timeout. --> The request channel timed out while waiting for a reply after 00:00:48.9391932. Increase the timeout value passed to the call to Request or increase the SendTimeout value on the Binding. The time allotted to this operation may have been a portion of a longer timeout. --> The request operation did not complete within the allotted timeout of 00:00:50. The time allotted to this operation may have been a portion of a longer timeout.