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Gurvinder Bharya
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Exchange 2010 to 2016 Migration

Hallo All,

I am carrying out a migration from Exchange 2010 Standard to Exchange 2016 Standard and all was going well until recently I noticed getting the error attached. Can anybody assist me with the same.

Thank you,
Screen-Shot-2017-03-10-at-14.44.43.jpg
ExchangeEmail ServersWindows Server 2012

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Gurvinder Bharya

8/22/2022 - Mon
Gaurav Singh

is this the error when you open EMS?
Gurvinder Bharya

ASKER
Yes Gaurav. This is the error when EMS is opened.
Gaurav Singh

Please check the IIS, Default Backend Site, if the certificate is assigned to that or not.
Also make sure that you are opening EMS as administrator with domain account
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Gurvinder Bharya

ASKER
Thanks Gaurav,

I have indeed done this and still experience the same issue. It tries to connect to the new server, but after receiving this error, it connects to the old server successfully. Seeing that I shall decommission the old server, I would like for the installation to be perfect.
Gaurav Singh

can you check the event logs on the server for any error?
Gurvinder Bharya

ASKER
The common error that I am noticing that might be connected to Exchange Server is:

Inbound authentication failed with error UnexpectedExchangeAuthBlobCheckForClockSkew for Receive connector Default Mailbox Delivery ABCExc. The authentication mechanism is ExchangeAuth.
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aravind anche

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Gurvinder Bharya

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Gurvinder Bharya

ASKER
I manage to resolve the issue on my side. Neither of the comments was as close to my solution therefore I shall not award any points to anyone else.