Skype for Business 2019 fails to search address book.

Jason Pringle 0

Skype For Business 2019 - On premise

When trying to search for any users by first or last name we receive error message "We couldn't find an exact match. Try refining your search"

There isn't any Galcontacts.db present in the localappdata. Search only works when looking up users by SIP. Entering a SIP address returns the correct result with picture, presence, etc...

Notification at the bottom right is "Cannot Synchronize Address Book"

Skype Configuration -

Gal Status - "Cannot synchronize with the corporate address book. This may be because the proxy server setting in your web browser does not allow access to the address book. If the problem continues, please contact your support team"

We believe the issue is related to TLS. We get the following error message on our Front-end server System logs - Event 36871 - A fatal error occurred while creating a TLS client credential. The internal error states is 10013. The SSPI cleint process is w3wp (PID: 1076).

Another error in the Lync Server Log is - Event ID 4096 - LS web Components Server - "An unhandled exception was encountered. Service: WebTicketSercvice, exception details: System.ComponentModel.Win32Exception (0x80004005)" The client and server cannot communicate because they do not possess a common algorithm at system.Net.SSPIWrapper.AcquireCredentialsHandle.

JimmyYang-MSFT 55,061 Reputation points Microsoft Vendor

2024-10-17T09:27:07.25+00:00
@Jason Pringle

You could check it by following these steps:

Verify TLS Configuration:

Check the certificates on your front-end server to ensure they are correctly configured and not expired.

Verify that the server's TLS settings are correctly configured. You may need to review the Schannel settings in the Windows registry.

Ensure that you are using the correct encryption algorithms and that there are no misconfigurations in your TLS setup.

Check Address Book Service:

Ensure that the Address Book Service is running on the front-end server. You can restart the service to see if it resolves the issue.

Check the file share where the address book files are stored. Make sure the Skype for Business server has the correct permissions to access this location.

Review Web Proxy Settings:

Verify the web proxy settings in your environment. The proxy might be blocking the connection to the address book server.

Check your web browser's proxy settings and compare them to the settings configured on the Skype for Business server.

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Skype for Business 2019 fails to search address book.

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