SfB Server 2015: Prerequisite installation failed: RewriteModule…failure code 1603

While deploying a new Skype for Business Server 2015 Pool in the lab we got the following error message in the Deployment Wizard Step 2 (bootstrap): Installing rewrite_2.0_rtw_x64.msi( REBOOT=ReallySuppress )...failure code 1603 -------------------- Error Message from rewrite_2.0_rtw_x64.msi---------------------------- Property(S): TTCSupport = 1 Property(S): Time = 11:25:19 Property(S): Date = 4/10/2020 Property(S): MsiNetAssemblySupport = 4.6.1586.0 Property(S): MsiWin32AssemblySupport … Continue reading SfB Server 2015: Prerequisite installation failed: RewriteModule…failure code 1603

Lync/SfB Server: How to fix msRTCSIP-DeploymentLocator when it’s empty/not set

While working on a support case we notice that the AD Attribute msRTCSIP-DeploymentLocator wasn't set for some Skype for Business enabled users. These users could sign in and use the Skype for Business features, however, we decided to make sure all SfB OnPrem users had the correct value - "SRV:" We can use the following … Continue reading Lync/SfB Server: How to fix msRTCSIP-DeploymentLocator when it’s empty/not set

Changing Lync/SfB Server PowerShell windows size

A quick way to change the Lync/SfB Server PowerShell window size is to run the following cmdlets: However, this change is temporary, when we open a new Lync/SfB Server PowerShell it will return to the default values. To modify the default values we need to change Layout settings in the Lync/SfB Server PowerShell shortcut properties: Lync … Continue reading Changing Lync/SfB Server PowerShell windows size

SfB Server: Cannot install SQL Server 2014 Express SP3

While installing the SQL Server 2014 SP3 we experience the following error: SQL Server Setup has encountered the following error: Exception has been thrown by the target of an invocation. Here is the cmdlet we use: SQLEXPR_x64_ENU.exe /ACTION=Patch /AllInstances /IAcceptSQLServerLicenseTerms Looking at the SQL Setup Bootstrap log we have an exception: C:\Program Files\Microsoft SQL Server\120\Setup … Continue reading SfB Server: Cannot install SQL Server 2014 Express SP3

Lync/SfB Server: Certificate assignment location

Usually to check the Lync/SfB Server assigned certificates we simply use the Certificate Wizard (Step 3 in the Lync/SfB Deployment Wizard): Or we can also use a PowerShell cmdlet: Get-csCertificate https://docs.microsoft.com/powershell/module/skype/get-cscertificate However, there is another way... We can go directly to where the assigned certificates information is located. The certificate assignment is stored in XML, … Continue reading Lync/SfB Server: Certificate assignment location

Invoke-CsComputerFailOver : Command execution failed: Insufficient number of computers

During a test we could not fail over a Skype for Business Front End server with the following error: Invoke-CsComputerFailOver -ComputerName <Server FQDN> https://docs.microsoft.com/powershell/module/skype/invoke-cscomputerfailover WARNING: Invoke-CsComputerFailOver failed. WARNING: Detailed results can be found at "C:\Users\Administrator.RECORE\AppData\Local\Temp\2\Invoke-CsComputerFailOver-59928429-ed4f-4954-b5de-d69b11290780.html". Invoke-CsComputerFailOver : Command execution failed: Insufficient number of computers (only 2 nodes would remain active) to maintain the minimum number of … Continue reading Invoke-CsComputerFailOver : Command execution failed: Insufficient number of computers

SfB Server 2015 (KB4464355) could not be installed. Error code 1603.

While installing the Skype for Business Server 2015 CU8 on the Edge Server we had the following error: In the Server.msp-SFBEDGE01-[2019-01-24][10-36-34]_log: MSI (s) (C0:B4) [10:37:04:023]: Executing op: CustomActionSchedule(Action=CA_InstallDBonPatchInstall,ActionType=3073,Source=BinaryData,Target=ExecuteCommand,CustomActionData=powershell -noprofile -command " & Install-CsDatabase -Update -DatabaseType Registrar -Verbose "|C:\Windows\system32\\WindowsPowerShell\v1.0\powershell.exe|C:\Windows\system32\) MSI (s) (C0:B4) [10:37:04:027]: Creating MSIHANDLE (10878) of type 790536 for thread 4788 MSI (s) (C0:20) [10:37:04:027]: Invoking remote … Continue reading SfB Server 2015 (KB4464355) could not be installed. Error code 1603.

SfB Server 2015, Install-CsDatabase : Command execution failed: The network path was not found. (AlwaysOn BackEnd)

Update: This behavior was fixed in Skype for Business Server 2015 CU9. After installing the Skype for Business Server 2015 CU8, we might see the following error when updating the databases on a AlwaysOn BackEnd: Install-CsDatabase -Update -ConfiguredDatabases -SqlServerFqdn <AlwaysOn SQL Listener> WARNING: Install-CsDatabase failed. WARNING: Detailed results can be found at "C:\Users\Administrator.RECORE\AppData\Local\Temp\2\Install-CsDatabase-e68ceeb8-b8dd-4296-96c6-00d5ec6f96fb.html". Install-CsDatabase : Command … Continue reading SfB Server 2015, Install-CsDatabase : Command execution failed: The network path was not found. (AlwaysOn BackEnd)

SfB Server: Verification Level on Allowed Domains

In Lync Server 2010/2013 when we added a federated partner sip domain to the Allowed Domains list we didn't had the option to configure the Verification Level for each federated sip domain. This means that for Lync Server 2010/2013 the default Verification Level was UseSourceVerification for allowed domains. If we had an open federation, then we could change this … Continue reading SfB Server: Verification Level on Allowed Domains

KB2982006 missing on SfB Server 2015 In-place upgrade

Thanks to Tobie Fysh to point out that the steps described in the previous post KB2982006 missing while installing SfB Server 2015 on Up-to-date Windows Server 2012 R2, don't apply if we are doing an inplace upgrade from Lync Server 2013 to Skype for Business Server 2015. We cannot use the same workaround because the Skype for … Continue reading KB2982006 missing on SfB Server 2015 In-place upgrade