If you are having issues with some users having freeze issues and high response time in Citrix Director, this registry key might help you. It happens in conjunction with dedicated GPUs on notebooks. The key disabled GPU acceleration for Citrix Workspace App.

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Citrix\ICA Client\Graphics Engine] “HWacceleration”=dword:00000000

References:

https://support.citrix.com/s/article/CTX297140-screen-freezes-and-takes-a-few-seconds-to-return-to-normal-apps-also-flicker-when-open?language=en_US

Classic Authentication Schemes will soon be deprecated in Citrix Netscaler and should be replaced with nFactor AAA.

Here is a quick tutorial on how to configure nFactor Authentication.

Security > AAA Application Traffic > Policies > Authentication > Basic Policies > RADIUS

Select Servers > Add

Name RADIUS_Server

Server IP xxxx

Secret

Also test the radius reachability

Security > AAA Application Traffic > Policies > Authentication > Basic Policies > LDAP

Select Servers > Add

Fill in all the information that apply to your domain

Security > AAA – Application Traffic, Policies, Authentication, Advanced Policies > Policy. Then, click “Add”

Do the same thing for RADIUS

Create AAA virtual server

Configuration > Security > AAA – Application Traffic > Virtual Servers

Import private certificate and root cert

Click on “No Authentication Policy”

Select Policy LDAP_Pol

Click on Select next to “Next Factor”

Add an authentication policy label

Continue

Policy Binding > Select RADIUS_Pol

Goto Expression > Select END and BIND the authentication Policy Label

Done

BIND

Continue

Add a login schema on the right side

Select “No Login Schema”

Select Policy

Bind and Done

Add nFactor to the Gateway virtual server

Citrix Gateway > Virtual Servers > select VIP > Add Authentication Profile on the right

Create > Ok > Done

If you get this error after logging in, you have to enable SSO on the Authentication Template

Go to Security > AAA Application Traffic > Login Schema > lschema_dual_factor_builtin > … Edit

Edit the profile again

Click on the pencil

> More > Check Enable Single Sign On Credentials > OK > OK

References:

https://community.citrix.com/tech-zone/build/deployment-guides/gateway-mfa/#_=_

Roughly a year ago I had an issue with grey screen on Windows Server 2022 with Citrix Virtual Apps and Desktops. A script helped clear out some registry key but there seem to still be problems with sessions with grey screens. Check out my post from last year: https://www.ajni.it/2023/03/citrix-virtual-apps-and-desktops-2203-grey-screen-connectionfailure-in-eventviewer/

There is a new fix that seems to be better and does not clear any registry keys. Instead it activates Citrix Universal DLL Injection. After upgrading the VDA, make sure this value is set:

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\CtxUvi]
“UviEnabled”=dword:00000001

This helped in my environment.

References:

https://discussions.citrix.com/topic/412451-just-grey-screen-instead-of-published-desktop/page/7/?sortby=votes

Having performance problems when deleting one single file or folder? File Explorer takes 2-3 seconds to “calculate” something before deleting? Deleting automatic destinations might help you out. I had a case where this file was 4MB big, which is a lot for only text/paths.

Delete everything under:

C:\Users\%username%\AppData\Roaming\Microsoft\Windows\Recent\AutomaticDestinations

The big file in question is f01b4d95cf55d32a.automaticDestinations-ms. You might want to delete this file only. But I deleted everything.

References:

https://answers.microsoft.com/en-us/windows/forum/all/file-explorer-freezes-every-time-i-try-to-delete-a/95dc1a91-6a28-487a-8741-5569226e9a36

https://www.tenforums.com/tutorials/175934-how-backup-restore-quick-access-pinned-folders-windows-10-a.html

Updating VMware Tools on a Citrix Provisioning Master Image used to be very time consuming. Nowadays it has gotten a little better, but you still have to do a few extra steps because of the vmxnet3 network adapter. Here are the steps that I took when upgrading to the newest Vmware Tools that came with ESXi 8.0 update.

• Start the Master VM
• Once booted up, add a new E1000E network card
• Check in device manager if the E1000E/Intel network card can be seen
• Shutdown VM
• In the Provisioning console, change the mac address of the target device to that of the E1000E network card
• Disconnect vmxnet3 NIC (uncheck connect on power on)
• Start Master VM. Beware that the E1000E NIC is emulated and is painfully slow. I had instances where it took 15 minutes to boot up!
• Once booted up, start VMware Tools upgrade through Vcenter (interactive)
• Visual C++ Redistributable might be installed, you might need to reboot
• Let boot
• Start Vmware Tools upgrade again (interactive)
• Run the installer
• Shutdown VM
• Disconnect E1000E NIC (uncheck connect on power on)
• Connect vmxnet3 NIC (check connect on power on)
• Boot
• Once booted, fully remove E1000E fully
• In device manager, show hidden devices and delete the greyed out Intel NIC

This time there are no references. I had to try and error myself.