How to fix error when launching an application via Citrix ICA connection in rUserManager?

Problem

When launching a Citrix XenApp application or trying to connect to Citrix XenDesktop inside a user session in rUserManager the following issues might occur: 

1. Citrix Receiver Error: "This version of Citrix Receiver does not support selected encryption. Please contact your administrator."

2. Citrix Desktop doesn't connect.

3. Citrix Receiver Error: "You might be having an issue with a Citrix virtual driver (SmartCard). Contact your system administrator for further assistance."

Solution

Follow the steps below to increase the timeout of the Citrix Receiver by adding the following key:

On 32-bit Windows:
Location: HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\ICA Client
Name: VdLoadUnLoadTimeOut
Type: REG_DWORD
Data: Any value in seconds (Decimal)

On 64-bit Windows:
Location: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432node\Citrix\ICA Client
Name: VdLoadUnLoadTimeOut
Type: REG_DWORD
Data: Any value in seconds (Decimal)  (i.e 10) 

Tip: If 10 seconds doesn't work, please try to increase the value of the timeout. (i.e. 20 or 30 seconds)

Note: Registry key values are typically listed in decimal format, unless specified otherwise.

How to fix _This version of Citrix Receiver does not support selected encryption_ error when launching an application via Citrix ICA connection in rUserManager_ (115006203288)_mceclip0

 

Source: https://support.citrix.com/article/CTX133536