However, using the following cmdlets to review the certificates’ serial numbers does not show a match for either: One of the first troubleshooting steps I attempted was from the following blog post:Īttempting to follow the instructions provided by this blog post does not apply to your situation: The serial number is attached for reference.Įxtended Error Code: 0x800B0109(CERT_E_UNTRUSTEDROOT).Ĭlicking on the Details tab show the following: Review and correct the certificate configuration, then start the service again.Ī configured certificate could not be loaded from store. Also ensure that the server has sufficient privileges to access the store.Ĭause: The Skype for Business Server failed to initialize with the configured certificate. The certificate may have been deleted or may be invalid, or permissions are not set correctly.Įnsure that a valid certificate is present in the local computer certificate store. Unable to use the certificate configured for the external edge of the Access Edge Server. The service has to stop.Ī serious problem related to certificates is preventing Skype for Business Server from functioning. The protocol stack reported a critical error: code 0x800B0109 (CERT_E_UNTRUSTEDROOT). The protocol stack reported a critical error: code 0x800B0109 (Configuration failure prevented the server from starting up). The Skype for Business Server Access Edge service terminated with service-specific error %%-2146762487. The following corrective action will be taken in 180000 milliseconds: Restart the service. The Skype for Business Server Access Edge service terminated unexpectedly.

Reviewing the event log displays the following errors: If this is a non-Microsoft service, contact the service vendor, and refer to the service-specific error code -2146762487. For more information, review the System Event Log. Windows could not start the Skype for Business Server Access Edge on Local Computer. You’ve noticed that the Skype for Business Server Access Edge service on your Skype for Business Server 2015 Edge server is stopped and the following error is thrown when you attempt to start it:

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