How to Update Lync 2013 Standard Backend Database ?

Posted by Ahmed Nabil In | 0 comments»
Microsoft Releases frequent Cumulative updates for Lync 2013 servers and Most of these updates requires updating the Lync 2013 SQL Backend database. In this article I will discuss how to update the SQL Express backend database after installing a new Lync 2013 Cumulative update or specific Rollup that requires DB version update.

First to check the status of the Database after installing the cumulative update and whether you need an update, you need to run the below two commands from elevated Lync Power Shell.

  1. PS C:\> Test-CsDatabase -ConfiguredDatabases -SqlServerFqdn | FT DatabaseName, ExpectedVersion, Installedversion        
  2. PS C:\> Test-CsDatabase -CentralManagementDatabase | FT DatabaseName, ExpectedVersion, InstalledVersion

The Output will be something similar to that (This is the output of the second command on one of my deployments)

DatabaseName        ExpectedVersion      InstalledVersion
     ------------                   ---------------              ----------------
         xds                             10.13.2                    10.13.1
          lis                                 3.1.1                      3.1.1

As you can see there is a difference between the expected and installed value in the XDS database.
To update the Database we need to run the below commands in sequence:
  1. Install-CsDatabase -ConfiguredDatabases -SqlServerFqdn FEBE.FQDN -Verbose
  2. Install-CsDatabase -CentralManagementDatabase -SqlServerFqdn CMS.FQDN -SqlInstanceName DBInstanceName -Verbose
After that we need to enable CsMobility service and Run Bootstrapper as follows:
  1. Enable-CsTopology
  2. Bootstrapper.exe
  3. Reboot the server.

This should take care of updating the backend DB and you can double check by running the previous Power Shell again and ensure both expected and installed versions are the same.

Reference Links:

Lync 2013 Cumulative Update List

Lync Server Resources


UAG 2010 SP4 Released to support Windows 8.1 and IE 11

Posted by Ahmed Nabil In , | 0 comments»
Good news for all Microsoft UAG 2010 users, Service Pack 4 (SP4) was released officially yesterday to support Microsoft Latest Operating system Windows 8.1 and Internet Explorer 11 (IE 11). This new SP4 provides other important features as the support of Remote Desktop Connection RDC 8.1 and the Remote Apps published from Remote Desktop session Host on Windows 2012 or 2012 R2.

The Link to download the Latest SP4 is as follows:

For More details about features and fixes included in this Service Pack, please check the following link:

Service Pack 4 includes some other fixes as well as stability and performance enhancements, I will give it a try and hopefully it will be smooth operation.

Why DPM can only take offline backup for some VMs under Hyper-V 2012R2 Host ? Need SCSI !!

Posted by Ahmed Nabil In , | 8 comments»
I published a recent article on migrating/moving VMs from 2008R2 to 2012R2 Hyper-V host (you can check it at ), after successfully moving these VMs we faced another problem trying to backup them. We were using the latest DPM 2012R2 and we noticed that it added these VMs as offline only and for some reason it can't take online backup of them.

After some investigation we noticed an error on the hyper-v host with Event ID 10103 (check below image) which clearly mention that backup will fail because this VM doesn't have a SCSI controller.

So the solution was just to add a SCSI controller even if its connected to nothing, after that online/hot backup was taken smoothly without any problem.

So what was the problem ?

I discussed this issue with several Microsoft support personnel and It turned out that online or hot backup for a VM in 2012R2 Hyper-V host requires mounting a new VHD in the VM and then dismounting it later. Since only the SCSI controller can mount/support hot plugging of virtual disks, it became clear why we need this SCSI controller.

Old version of Hyper-V didn't work this way,  it required that the Hyper-V host mount the guest VHD as part of the backup process which is something Microsoft didn't like as it increase the surface of attack on this host.

How to Migrate/Move Virtual machines from 2008R2 Host to 2012R2 Host ?

Posted by Ahmed Nabil In | 3 comments»
We were recently working on a project with my team to move and migrate several 2008R2 virtual machines from 2008R2 SP1 Hyper-V Host to the latest Hyper-V 2012R2 host and we faced a lot of troubles since the old import and export is not working anymore and not supported.

Hyper-V Virtual machines that used to be exported from Server 2008R2 Host were utilizing the version 1 WMI namespace which resulted in an export file (.exp) which was used to represent the exported virtual machine. When Server 2012 was released version 2 of WMI namespace was introduced and version 1 was deprecated (Server 2012 still compatible with old version 1 WMI namespace but no new features or additions will be added, Microsoft normally use deprecated as a step to fully remove and delete this feature on the next version) and then it was totally deleted in Server 2012R2.

For a list of deprecated and removed features in 2012/2012R2, check this link

After several trials and investigations done by my team we reached two recommended methods for moving the VMs to Hyper-V 2012R2 hosts (Both were confirmed later by Microsoft Support Team) as follows:

  1. The Easiest way will be to turn off the VM on the hyper-V 2008R2 host and stop the VMMS service on the host server as well to unlock all VM files. The next step is to copy all Virtual Machine files/folder including the VHDs, XML..........etc. to the server 2012R2 and import them directly.
  2. Another method can be done is to use an intermediate server (this can be used if you already exported your VM and deleted the original VMs). In this method you will export the VM from the 2008R2 host and then import in in 2012 Hyper-V host (no need to start it up) and then export it again from the 2012 Host and import it in 2012 R2 host.

For more information about Version 2 WMI Namespace, check the below link

An excellent resource on Hyper-V generation 2 virtual machines is the 10 blog series by John Howard