Troubleshooting RDP/RemoteApp Connections on Windows 7

if you are having problems connecting to an RDP App, or a RemoteApp, when using a version of Windows 7 OS then please attempt the following troubleshooting:

  1. Check version number and/or Upgrade your MSTSC.exe application
  2. Verify that the CredSSP update is installed
  3. If you are using a proxy within your browser, ensure that the TAC Portal Site has been added to the browser proxy exception list, 
  4. Ensure that you are not using a VPN add-on in your browser.

Check version number and/or Upgrade your MSTSC.exe application:

  • The Windows 7 Remote Desktop Connection application (MSTSC.exe) will need to have, at the very least, "8.1 supported". The following is how to check your current MSTSC.exe version number. 

  • You can also start the Remote Desktop Connection from the Command Prompt by typing "MSTSC"

  • If you do not see version "8.1 supported", or higher, then please upgrade your MSTSC.exe version by following the instructions below:
  1. Please navigate to the following Microsoft site HERE and download the x86 or x64 version; which ever version is reflective of your current Windows 7 OS.
  2. After all the KB update files have been downloaded, make sure that they are installed in the correct order. See the screenshot below:


Verify that the CredSSP update is installed

  • Please verify that the following Microsoft KB updates have been installed:
    • Windows 7 for 32-bit and x64-based Systems Service Pack 1: 4103718 and 4103712
  • If the above KB updates are not installed, you can read about the CredSSP Vulnerability, download and install them from the Microsoft site HERE.


If you are using a proxy within your browser, ensure that the TAC Portal Site has been added to the browser proxy exception list, .

  • In order to add an exception to your browsers proxy settings, please follow sets #1 thru #5 noted in the screenshot below
  • Add the TAC Portal Site in the box at step #5


Ensure that you are not using a VPN add-on in your browser

  • If your VPN add-on/extension allows for exceptions, then please add the TAC Portal site to the exception list. If it does not, then you will need to disable the VPN add-on/extension. See how to do this in Google Chrome and Internet Explorer below:

  • For Google Chrome Browser see the screenshot below. After opening the Extensions tab, turn off any VPN extensions.

  • For the Internet Explorer Browser see the screenshot below. After opening the Manage add-ons window, disable any VPN add-ons.