Skype for Business Client 2016 restricted external calls

Over the past few days, restricted external calls have appeared in the lower right corner of the customer's Skype for Business Client 2016 client. A red exclamation mark appears in the Skype icon in the taskbar, and the following error occurs:

Possible causes of this problem:

Abnormal replication of edge server and front-end server; intra-edge network card and external network card cannot be routed; abnormal communication between edge server and front-end server

Solution:

Use the command to check whether the replication status of the edge server and the front-end server is normal (Skype for Business-related server replication is True) Get-CsManagementStoreReplicationStatusGet-CsManagementStoreReplicationStatus | Where-Object {$_ .UpToDate-eq $False} use the command to view the route to ensure that the internal and external network card of the edge server can be routed.

Route Print

3. Check the Lync Server log of the edge server and find the following error

4. Add the FQDN names of multiple servers to the intranet certificate on multiple edge servers in Skype for Business

5. Run the force copy command on the front-end server

Invoke-CsManagementStoreReplication

6. Wait for the forced replication between Skype for Business servers to complete, and use the command to check whether the replication is complete (make sure it is all True) Get-CsManagementStoreReplicationStatusGet-CsManagementStoreReplicationStatus | Where-Object {$_ .UpToDate-eq $False}

Problem solved.