Exchange Hybrid Wizard Error

Question

Hi, At the final step of the Hybrid Wizard (Validating Hybrid Agent for Exchange usage), I am getting this error message. I've searched for this error and cannot find the correct fix. Thanks.

The log files show his error: ERROR 10349 [Client=UX, Page=HybridConnectorInstall, Thread=15]  The connection to the server 'fdde59f1-85fd-48b6-bbe4-0bf434e02b29.resource.mailboxmigration.his.msappproxy.net' could not be completed., The call to 'https://fdde59f1-85fd-48b6-bbe4-0bf434e02b29.resource.mailboxmigration.his.msappproxy.net/EWS/mrsproxy.svc' timed out. Error details: The request channel timed out attempting to send after 00:00:00.0077217. 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 HTTP request to 'https://fdde59f1-85fd-48b6-bbe4-0bf434e02b29.resource.mailboxmigration.his.msappproxy.net/EWS/mrsproxy.svc' has exceeded the allotted timeout of 00:00:00.0077217. The time allotted to this operation may have been a portion of a longer timeout., The request channel timed out attempting to send after 00:00:00.0077217. 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 HTTP request to 'https://fdde59f1-85fd-48b6-bbe4-0bf434e02b29.resource.mailboxmigration.his.msappproxy.net/EWS/mrsproxy.svc' has exceeded the allotted timeout of 00:00:00.0077217. The time allotted to this operation may have been a portion of a longer timeout.

Answer 1

Hi,@shocko

Thanks for posting your question in the Microsoft Q&A forum.

This problem occurs if the Mailbox Replication Proxy (MRS Proxy) service in the EWS virtual directory on the hybrid server is in a disabled state.Please check them in order:

Check Network Connectivity:

Ensure that there are no network issues or firewall settings blocking the connection to the server fdde59f1-85fd-48b6-bbe4-0bf434e02b29.resource.mailboxmigration.his.msappproxy.net.

Verify MRSProxy Settings:

Make sure that the MRSProxy service is enabled and properly configured on the Exchange server. You can do this by running the following command in Exchange Management Shell:

Get-WebServicesVirtualDirectory | Set-WebServicesVirtualDirectory -MRSProxyEnabled $true

You can refer to this link for details:https://learn.microsoft.com/en-us/exchange/troubleshoot/move-mailboxes/remote-server-returned-error-403-forbidden

Restart IIS:

After making changes to the MRSProxy settings, restart Internet Information Services (IIS) using the iisreset command.

Check TLS Settings:

Ensure that TLS 1.2 is enabled on the server where the Hybrid Agent is installed.

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