I have Exchange 2010, and I'm trying to upgrade it from SP1 to SP2 R6. i have 4 servers. the first one went fine and the second one which has CAS and HUB roles updated successfully but the Transport Service is not starting. I search on google and found that
I have to enable IPV6 but no luck. I have removed HUB role and when I install it again it is failing.
In the install log i found this error (Service 'MSExchangeTransport' failed to reach status 'Running' on this server after waiting for '25000' milliseconds.)
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