Tag: Skype for Business

Skype for Business, Asterisk and SIP REFER

Skype-For-Business-Asterisk-SIP-Refer

If you don’t use VoIP gateway that “officially” supported by Microsoft and Skype for Business you may experience troubles in some cases as those devices may not interpret correctly SIP Refer messages sent by Skype for Business Mediation Server. The problem I’ve experienced in my environment was that when you activate “Call me at” feature …

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Cannot publish topology changes. Conference directories still exist on a pool that would be deleted. Remove the conference directories before continuing.

During migration to a new pool there was a need to remove old Front End servers from topology. After removing them from topology builder I received this error: “Cannot publish topology changes. Conference directories still exist on a pool that would be deleted. Remove the conference directories before continuing”. Quick look into the error showed …

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Skype for Business. Move Central Management Store

add-database-to-high-availability-group

There is a need to move Central Management Server to a new pool as the existing one is going to be decommissioned. SQL Backend consists of two MSSQL 2014 Servers running in AlwaysOn Cluster. While running Move-CsManagementServer commandlet with –WhatIf key I got an error: Cannot move Central Management Server. The new Central Management Store …

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Install Skype for Business Prerequisites

skype-for-business

  Skype for Business Server 2015 is available now, along with a new set of demands to install it right on your Windows Server. Here are the recommendations for each Windows version: Windows Server 2008R2: Microsoft recommends that you only install Skype for Business Server 2015 on Windows Server 2012 or 2012R2. However, if you’re …

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Understanding Skype for Business DNS Records and Autoconfiguration

Skype for Business DNS Records are one of critical components of the whole infrastructure. Skype for Business uses two types of DNS records: A record and SRV record. The DNS is often deployed as “split-brain” DNS deployment: the same zone name is deployed internally and externally but with different (internal or external) IP-addresses for the …

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File Transfer Agent cannot send/get replication data to Replica Replicator on Edge

ClientAuthTrustMode Event ID Event ID 1047

The sympthom is that on Skype for Business Front End Server you see Event ID 1046 LS File Transfer Agent Service in the Event Log: Skype for Business Server 2015, File Transfer Agent cannot send replication data to Replica Replicator on Edge Skype for Business Server 2015, File Transfer Agent cannot get replication status from Replica …

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Skype for Business Server 2015 Databases Purpose

Skype-for-Business-databases-standard

Skype for Business Server 2015 databases are as same as they were in Lync Server 2013. So this article is appliable for Lync Server 2013 as well. Skype for Business Server 2015 installs SQL Server 2014 Express Edition (64-bit) for local configuration databases while SQL Server 2014/SQL Server 2012 SP2 with CU2/SQL Server 2008 R2 …

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Get-CsBackupServiceStatus statuses meaning

Get-CSBackupStatus

The Skype for Business Server Backup Service is a service used to support disaster recovery. The Skype for Business Server Backup Service supports two categories of data (UserData and CMS), which it will copy between paired pools to keep them synchronized. The implementation use three modules: UserServices.PresenceFocus, ConfServices.DataConf and CentralMgmt.CMSMaster. The modules can operate both …

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Web Conferencing Server connection failed to establish. Event ID 41987

import-ca-certificate-skype-for-business-edge-0x80090325(SEC_E_UNTRUSTED_ROOT)

Web Conferencing Server connection failed to establish. Over the past 1 minutes Skype for Business Server has experienced incoming TLS connection failures 1 time(s). The error code of the last failure is 0x80090325(SEC_E_UNTRUSTED_ROOT) and the last connection was from the host “”. Cause: This can occur if this box is not properly configured for TLS …

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No connectivity with any of Web Conferencing Edge Servers. Event ID 41026

No connectivity with any of Web Conferencing Edge Servers. External Skype for Business clients cannot use Web Conferencing modality. Cause: Service may be unavailable or Network connectivity may have been compromised. Resolution: Verify all Web Conferencing Edge Services in the topology are running, and network connectivity is available. There are four most common reasons for …

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