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Test-OAuthConnectivity fails from on premises exchange to O365
I ran HCW and it completed successfully but at the end it gave warning that OAuth could not be setup please re run the HCW or try setting up OAuth manually. I re ran the Oauth still same issue hence...
PeterRising thanks for your help..
The issue was due to the firewall blocking office 365 ews . I allowed the URL in F5 firewall and it resolved the issue
Hi, what version of Exchange is your hybrid server running, and do you have any other Exchange servers in the environment. If so, what versions are they running, and are they all up to date with latest SP and CUs?
Also, what SSL certificate do you have for your hybrid config? It needs to be an externally signed SSL cert and I usually find that a wildcard or SAN cert works best.
PeterRising thanks for your help..
The issue was due to the firewall blocking office 365 ews . I allowed the URL in F5 firewall and it resolved the issue