My Lync phones (all CX600s) have lost their previously-working connections to Exchange Web Services.
The only global change I know of was the renewal of the Lync server's internal certificate.
Looking at the .CLG logs, I can't pinpoint the error. Lync clients (software) still find EWS and connect fine.
Are there any issue I should be looking for specifically? Root CAs are identical. Intermediate/issuing CAs are different (though the situation was the same before).
I am running 4.0.7577 4387 on at least one phone and seeing the issues there (as well as in older FW editions).
The certificate paths now look like:
Lync 2010 Standard:
Certificate chain
0 s:/OU=Domain Control Validated/OU=COMODO SSL Unified Communications/CN=wat-lyncfe-01.xyz.net
i:/C=GB/ST=Greater Manchester/L=Salford/O=COMODO CA Limited/CN=COMODO SSL CA
1 s:/C=GB/ST=Greater Manchester/L=Salford/O=COMODO CA Limited/CN=COMODO SSL CA
i:/C=SE/O=AddTrust AB/OU=AddTrust External TTP Network/CN=AddTrust External CA Root
Exchange 2010 Autodiscover
Certificate chain
0 s:/C=US/postalCode=01801/ST=MA/L=Woburn/street=Suite 26/street=300 Center/O=XYZ/OU=IT Department/OU=PremiumSSL Wildcard/CN=*.xyz.bm
i:/C=GB/ST=Greater Manchester/L=Salford/O=COMODO CA Limited/CN=COMODO High-Assurance Secure Server CA
1 s:/C=GB/ST=Greater Manchester/L=Salford/O=COMODO CA Limited/CN=COMODO High-Assurance Secure Server CA
i:/C=SE/O=AddTrust AB/OU=AddTrust External TTP Network/CN=AddTrust External CA Root
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