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Exchange 2010 and 2013 coexistence issues.

Hi,

I have a coexistence of exchange 2010 and 2013. After installing a certificate on the 2013 server i have lost email connectivity with cell phones and I am not sure how to correct this issue.

I am also considering backing out of the coexistence by uninstalling 2013, making sure that 2010 is healthy and trying the upgrade again.

Any assistance is appreciated.

thank you,

ASKER CERTIFIED SOLUTION

M A

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Phy2015

ASKER

See attached errors.

Could this be associated with the certificate i installed on the 2013 server?
Connectivity-test-for-autodiscover.jpg

Phy2015

ASKER

MAS
Are you saying that i should have the same certificate installed on both servers?

M A

-->Are you saying that i should have the same certificate installed on both servers?
Yes

Phy2015

ASKER

I'll give that a try.
Thank you!

Phy2015

ASKER

you cannot install the same certificate on both servers.

error

A special Rpc error occurs on server PHYEXCH13: Cannot import certificate. A certificate with the thumbprint CDC91...............................................C871 already exists.

M A

-->A special Rpc error occurs on server PHYEXCH13: Cannot import certificate. A certificate with the thumbprint CDC91...............................................C871 already exists.
Are you sure you exported the new certificate?
if its a renewed certificate it will have a unique thumbprint

Phy2015

ASKER

Yes, i did the export from 2010 and the import to 2013.

M A

You still have issue for mobiles?

Phy2015

ASKER

Hi MAS,

What I did was undo some of the DNS changes i had made to activesync and autodiscover and the phones began connecting again.

I will begin moving forward with the upgrade again in the near future when i can dedicate more time to that project.

Thank you for your assistance.

M A

Glad to know you sorted out.

Phy2015

ASKER

MAS

Your initial response time was quick and your patients with me is greatly appreciated.

I'm sure i will be asking Exchange questions in the future and I hope you are still assisting with these issues.

thank you

M A

Pleasure :))