4507232 Resuming a PSTN call that was put on hold results in one-way audio in Skype for Business Server 2015.4459114 The installed local XDS database version isn't matched with the expected version in Skype for Business Server 2015.4507230 Support LBR and branch site voice resiliency conflicting requirements in Skype for Business Server 2015.4510846 “InstallDatabaseInternalFailure: An internal error has occurred…” error when installing new databases in Skype for Business Server 2015.4510847 Rate My Call on UCWA clients still shows after installing the January 2019 Cumulative Update for Skype for Business Server 2015.4511313 “Too many outstanding requests for a single user” error occurs on Front-End servers in Skype for Business Server 2015.4510850 Skype for Business on Mac user’s latest photo can’t be seen until signing in to a Windows client in Skype for Business Server 2015.

4510851 SCOM SQL alerts are created every hour on SQL Secondary Replica server if 'Always On' for Monitoring Server is set in Skype for Business Server 2015.4510852 UCWA client is disconnected because w3wp.exe crashes when using clarity connect in Skype for Business Server 2015.This cumulative update includes a defense in depth fix and enables Location-Based Routing to support the Skype for Business mobile clients.

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