Anyone seen this issue with LTSR 2507.1 on Windows 11: "The version of Citrix workspace does not support selected encryption." We have rolled out 2507.1 to our estate and this error seems to randomly occur on machines, sometimes a uninstall/reinstall of Workspace fixes it but on other machines they just will not connect to any apps or desktops.

Are you connecting to Storefront directly, storefront behind a NetScaler Load Balancer, or behind NetScaler Gateway. This usually happens if something in the chain tries to use a lower SSL standard than the rest of the stack.

Storefront behind a NS Load Balancer, no reported issues from users coming in through the NS Gateway.

Check the SSL Profile hardening I just posted in the NetScaler bucket. Sounds like it the Gateway has better certificate encoding than the LB directly. So hard coding stuff to just use TLS 1.2 and 1.3 should prevent any renegotiating to a lower TLS level from the client side, breaking Workspace.

Thank you will take a look 🙂

Probably not the same cause, but in every instance I have worked in our environment it has been a routing/network issue that caused this message. I don't have a good explanation as to why that particular message.

I have had a look and TLS seems to be fine (we have TLS 1.2) on the LB. Also its seems to only happen to random endpoints throughout the estate, of the 8K devices we have had the issue reported on 100-150. @Dennis Parker I also initially thought that but we have devices on the same vlan with the same version of Workspace and Windows 11 working without issues. Logged a ticket with Citrix, will update any findings.

👀

Got a case open with Citrix, they can see the App crashing for an unknown reason. Will be getting Procdump files sent over.