Skype for Business 2015 – Edge Servers not discovered by SCOM SfB Management Pack

I recently came across an issue where the SCOM (System Center Operations Manager) Agent was installed on all servers in a customers Skype for Business (SfB) Edge pool but they were not appearing in the SfB Management Pack (Skype for Business 2015 Server Health).

All Edge servers were showing as “Agent Managed” in SCOM and appeared in “Discovered Inventory” as Critical.  Using Health Explorer on each Edge server showed the following:

Summary

Topology discovery failed.

Causes

This can happen for a few reasons:

Resolutions

Fix the permission issues.

The context tab showed the following:

Description: DiscoverMachine.ps1 : ——————————————————————————– -Script Name: Skype for Business Server 2015 MP Machine Topology Discovery -Run as account: nt authority\network service -Execution Policy: RemoteSigned ——————————————————————————– Value of Source Id is {5AAFA97E-833F-9AD1-2678-56AFD1E2214C}. Value of ManagedEntity Id is {C4F6E362-BE95-93C1-729D-3F7BD6FAAFD6}. Value of Target Computer is EDGESERVER01.group.domain.com. SkypeForBusiness Module is added Successfully initialize discovery data. An exception occurred during discovery script, Exception : Could not connect to SQL server : [Exception=System.Data.SqlClient.SqlException (0x80131904): Cannot open database “xds” requested by the login. The login failed. Login failed for user ‘NT AUTHORITY\NETWORK SERVICE’. at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) at System.Data.SqlClient.SqlInternalConnectionTds.CompleteLogin(Boolean enlistOK) at System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean ignoreSniOpenTimeout, TimeoutTimer timeout, Boolean withFailover) at System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString connectionOptions, SqlCredential credential, TimeoutTimer timeout) at System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(TimeoutTimer timeout, SqlConnectionString connectionOptions, SqlCredential credential, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance) at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData) at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions) at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionPool pool, DbConnection owningObject, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions) at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection) at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection) at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection) at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection) at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection) at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) at System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry) at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry) at System.Data.SqlClient.SqlConnection.Open() at Microsoft.Rtc.Common.Data.DBCore.PerformSprocContextExecution(SprocContext sprocContext) ClientConnectionId:6de6255a-91a3-4d5d-b52c-f819cb1e4a1b Error Number:4060,State:1,Class:11]. ——————————————————————————–

The fix was to add “Network Service” to the following local groups on each Edge server:

• RTC Component Local Group
• RTC Local Administrators

After Network Service has been granted the above permissions, restart the Microsoft Monitoring Agent Service.

Within a few minutes all Edge servers appeared under the Skype for Business Management Pack.

The same problem with Lync 2013 can be found on TechNet here.

Chris Hayward

Technical Architect at Symity