Legacy devices missing Root Certificates

If a device is not receiving Windows Updates, they will eventually miss out on important security patches. These patches include updates to SSL certificates, which are used for encrypting communication between our servers and the client device.

If you are receiving any of the following errors, it is likely that your device is missing these updates.

  • SSL Error 70
  • "Unable to launch your application"
  • Unknown Client error 0


  • Connection not secure - invalid date

You can manually correct this by installing the following root certificate manually. 

Download Link



Install Process

  1. Click on the downloaded above and run it
  2. Select Install Certificate   mceclip0.png
  3. Select Local Machine mceclip1.png
  4. If prompted, all the application to run and "modify changes to this PC"
  5. Leave the rest as default mceclip3.png
  6. Click Finish

You should now be able to connect to your Hosted Desktop.

Update Citrix Workspace/Receiver

Also ensure that you have the latest supported version of Citrix Workspace or Receiver installed. You can download the latest version from

I still can't log in?

If your normal login URL is, you may be able to log in using instead. This is running the web-based version of Citrix Receiver, which has some additional limitations.


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