[Workspace App for Windows] – Display Issues when user re-docks their Notebook on the docking station and reconnecting to Citrix Session with Multiple Monitors

Test with below registries on the client side (create them if not present on the client machine):

Set ProcessWM_SETTINGCHANGE to 1

On Windows 32-bit systems:

HKEY_LOCAL_MACHINESOFTWARECitrixICA Client

Name: ProcessWM_SETTINGCHANGE

Type: DWORD

Value: 1 (default value is zero) (this fix is only for users who disable CDViewer Bar and run Desktop in full-screen mode)

On Windows 64-bit systems:

HKEY_LOCAL_MACHINESOFTWAREWow6432NodeCitrixICA Client

Name: ProcessWM_SETTINGCHANGE

Type: DWORD

Value: 1 (default value is zero) (this fix is only for users who disable CDViewer Bar and run Desktop in full-screen mode)


Set MonitorLayoutUpdateDelay to 4

On Windows 32-bit systems:

HKEY_LOCAL_MACHINESOFTWARECitrixICA Client

Name: MonitorLayoutUpdateDelay

Type: DWORD

Value: 0 to 4 (default value is zero)

On Windows 64-bit systems:

HKEY_LOCAL_MACHINESOFTWAREWow6432NodeCitrixICA Client

Name: MonitorLayoutUpdateDelay

Type: DWORD

Value: 0 to 4 (default value is zero)

If the issue still exists and if you see a grey screen, then try the below registry key.

NOTE: The usage of registry key ResolutionUpdateDelay is required only for issue where customer experiences grey screen issue even after applying the other two registry keys .

Set ResolutionUpdateDelay to 2000

On 32-bit Windows:

HKEY_LOCAL_MACHINESoftwareCitrixICA Client

Name: ResolutionUpdateDelay

Type: REG_DWORD

Data: 1000, 1500, 2000 and so on (time in milliseconds, 2000 is the recommended value)

On 64-bit Windows:

HKEY_LOCAL_MACHINESoftwareWow6432NodeCitrixICA Client

Name: ResolutionUpdateDelay

Type: REG_DWORD

Data: 1000, 1500, 2000 and so on (time in milliseconds, 2000 is the recommended value)


For reference:

https://support.citrix.com/article/CTX138197

https://support.citrix.com/article/CTX140962

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