Archive | 2019

Black Screen on mobile devices during logon – VMware Horizon and VMware Workspace One

17 Dec

We had a strange issue in which end-users reported a black screen when they clicked on their Desktop tile in Workspace One portal on their mobile devices on Android and iOS. The moment they clicked on the endpoint the black screen would go away and it would give the logon banner and normal Windows 10 logon.

Usual Suspects

Our investigation led to Windows Logon Banner applied via the group policy causing the black screen. We were soon able to rule out by disabling the logon banner and the black screen persisted.
The black screen only appear on mobile devices. The Desktop/Laptops you didnt observe the issue.

EUC Stack

VMware Horizon 7.6
VMware App Volumes 2.14.2
VMware Identity Manager 3.3
VMware User Environment Manager 9.4
Windows 10 1803

Resolution

We managed to open the VMware GSS case and a lot of troubleshooting was carried out from re-running the VMware OSOT tool and changing the Power Configuration policy.

The final configuration that resolved the black screen issue:

Open the master image and run PowerShell with administrative rights and execute the following commands:

powercfg -change -monitor-timeout-ac 0
powercfg -change -monitor-timeout-dc 0

(Note – Here 0 means Never)

ScreenSettings

Power and Screen Settings – Windows 10

Make sure you restart the master template post implementing the commands . Take a snapshot and perform “Push-Image” operation in Horizon Administror console.

I hope you will find this information useful if you encounter the Black Screen issue. A big thanks to Manivannan Arul my teammate for his continoursly effort while troubleshooting with GSS.

Thanks,
Aresh Sarkari Continue reading

VMware EUC – Horizon, UAG, VIDM and AppVolumes – NSX Load Balancing – Health Check Monitors

2 Feb

There is no single place to find a consolidated list of Load balancer health check monitors (aka Service Monitors in NSX) for the VMware EUC products:

I have been using VMware NSX load balancer across the board. The below details will provide an overview of what to enter for the health monitors. Note – If you are using something more meaningful  for your environment leave feedback in the comments section. I will try to implement the same and update the blog later.

VMware Unified Access Gateway (UAG)

Create a new Service Monitor under NSX and call is UAG_https_monitor. Refer to the screenshot for more details.

UAG Service Monitor

Send String: GET /favicon.ico


VMware Identity Manager (VIDM)

Create a new Service Monitor under NSX and call is VIDM_https_monitor. Refer to the screenshot for more details.

VIDM Service Monitor

Send String: GET /SAAS/auth/login
Response code: 200s

Horizon Connection Servers

Create a new Service Monitor under NSX and call is Horizon_https_monitor. Refer to the screenshot for more details.

image

Send String: GET /broker/xml/
Receive string: /styles/clientlaunch-default

VMware App Volumes

Create a new Service Monitor under NSX and call is AV_https_monitor. Refer to the screenshot for more details.

AV Service Monitor

I hope you will find these monitors useful in monitoring the VMware EUC products.

Thanks,
Aresh Sarkari