asked on outlook suddenly stopped connecting to exchange server giving certificate error
when opening outlook it fails and comes up with a certificate failure but when we view the certificate its the Federation certificate
checked the exchange Certificates and they appear to be ok.
the third part certificate Geo trust is ok
OutlookExchange
Last Comment
Alan Duck
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Get-ExchangeCertificate | Format-List FriendlyName,Subject,CertificateDomains,Thumbprint,Services
The command above will show you the thumbprint of the cert you want, then run the following command (replacing the thumbprint with the correct one)
Enable-ExchangeCertificate -Thumbprint 434AC224C8459924B26521298CE8834C514856AB -Services IIS
once that is done check IIS to make sure the correct certificate is binded