You may see the following error in EMC: “An error caused a change in the current set of domain controllers”. Get-DatabaseAvailabilityGroup shown below, is just one of the failing functions: This is usually combined with a slow (laggy) EMC in general. The problem can occur after having demoted Domain...

If you encounter the publishSelfPresence request error (Error Code = 0-1-492) in the CWA client, you most likely have a problem with the SPN (Service Principal Name) of the CWA Service Account. To correct this problem; open AdsiEdit and navigate to the CWA Service Account, right click and select Properties...

When trying to complete a certificate request in IIS 7 you may experience the error: CertEnroll::CX509Enrollment::p_InstallResponse: ASN1 bad tag value met. 0x8009310b (ASN:276) This error is described in KB article 959216 but the suggested resolution may not apply to you as the certificate is not imported...

You encounter the following error when trying to connect to the pool with Office Communicator: This is caused by the certificate on the server not matching the host name you are trying to connect to. Typically this is because the _sipinternaltls SRV record in DNS is pointing to a physical OCS server...

If you have a Office Communicator Phone Edition (aka. Tanjay) device, you might be wondering why your incoming, outgoing and missed calls as well as voice mails are not showing up in the lists on the device. For the integration to work, the Tanjay needs to access your mailbox and for this to work it...

After you have set up the Exchange Server 2007 UM role in a lab or in production and want to test Auto Attendant functionality by leaving voice mails for one or more users, you may experience that the Auto Attendant plays the greeting and asks for your message but the user doesn't receive anything although...