Drive mapping not working with User Environment Manager (UEM)

During a Horizon View implementation with User Environment Manager (UEM) 9.1 the drive mappings don’t show up for some with a Windows 10 VDI. The flexEngine log shows the drive mapping was successfully.

2016-12-16 15:18:45.084 [INFO ] Successfully mapped drive ‘G:’ to ‘\\filesrv-01\apps$’ (‘Applicaties.xml’)

When opening an elevated command prompt and type the command “net use“, the drive mappings where displayed and accessible. The users that didn’t get the drive mappings where local administrator in the Windows 10 VDI desktop.

There is a  known limitation with drive mappings if the user is:

  • Local Admin
    • and
  • User Account Control (UAC) is enabled

Changing one of them results in displaying the drive mapping in the Windows 10 VDI desktop. More information about this issue can be found here, link.

Update: December 22, 2016: Pim van de Vis (@pimvandevis) pointed me to the following setting to solve this issue. The VMware UEM FlexEngine Advanced ADMX template has an advanced setting that is called ‘Special Drive Mapping Logic’. Enabling the ‘Special Drive Mapping Logic’ setting solves this issues. More information can be found here, link.

What to check before upgrading to vSphere 6.5

Last week vSphere 6.5 was released (GA). This release has a lot of new cool features (see this link for more information). In the past I saw vSphere environments that are upgraded without proper preparation resulting in a rollback because compatibility issues with hard-or software. So I created a simple list with steps to check before upgrading to vSphere 6.5:

  • Check the hardware against the VMware Compatibility Guide, link
    • There is a PowerCLI script to check the hardware against the VMware Compatibility Guide, link
    • Devices deprecated and unsupported in ESXi 6.5, link
  • Check if all vSphere products are supported by vSphere 6.5. The following product are not supported yet (when writing this blog):
    • VMware NSX
    • VMware Integrated OpenStack
    • vCloud Director for Service Providers
    • vRealize Infrastructure Navigator
    • App Volumes
    • Horizon Air Hybrid-Mode
    • Integrated OpenStack
    • vCloud Networking and Security
    • vRealize Business for Cloud
    • vRealize Configuration Manager
    • vRealize Hyperic
    • vRealize Networking Insight
  • Check the “Important information before upgrading to vSphere 6.5 article, link
  • Check the update sequence for vSphere 6.5 and its compatible VMware products, link
  • Check if all the third-party products are supported by vSphere 6.5. For example last week Veeam Backup & Replication 9.5 is released. This release has no support yet for vSphere 6.5. Veeam Availability Suite 9.5 Update 1 will add support for vSphere 6.5.
  • The existing vSphere 6.0 license keys are supported for vSphere 6.5. No new license key are needed. More info: link
  • Check the vSphere 6.5 upgrade documentation, link
  • Always install vSphere 6.5 first in non-production environments and test all the critical stuff for some time. vSphere 6.0 had some nasty Change Block Tracking (CBT) bugs that you don’t want in your production environment.
  • Check the supported and deprecated topologies for VMware vSphere 6.5 article, more info: link
  • The vSphere Windows (C#) Client is  deprecated. Use the vSphere Web client of the new HTML5 based Client.
  • VMFS6 is the new filesystem of vSphere 6.5. VMFS6 cannot be inline or offline upgraded from VMFS5 to VMFS6. More info: link
  • TLS protocol versions 1.0, 1.1, and 1.2 are enabled by default in vSphere 6.5. More information about disabling TLS 1.0 can be found here: link.


Unable to remove the Guest Introspection service

In my lab environment I had problems with the Guest Introspection service. The installation was failed. Trying to remove the Guest Introspection service failed every time in the Service Deployments tab.


After performing the following steps, I was able to remove the Guest Introspection service :

  • Put the ESXi host in maintenance mode
  • Drag the ESXi host outside the cluster
  • Drag the ESXi host back to the cluster
  • Reboot the host
  • Exit maintenance mode
  • Click on resolve in the Service Deployments section

After performing these steps the Guest Introspection service is removed from the host.