Running 32-bit Remote Desktop Connection on Windows 64 bit

Solution: Rename the 64-bit mstsc.exe from System32 to prevent it from replacing the 32-bit process. This is simple if you have rights to rename that file. If you’re on NTFS you may get a “You require permission from TrustedInstaller to make changes to this file” error. To get by this error, you can take Ownership of the file and give yourself full permissions:

  1. Browse to %SystemRoot%System32
  2. Right click mstsc.exe and choose Properties
  3. Go to the Security tab
  4. Click Advanced
  5. Go to the Owner tab
  6. Click Edit
  7. From the “Change owner to:” list, choose your user name
  8. Click OK
  9. Go to the Permissions tab
  10. Click Change Permissions⬦
  11. Click Add
  12. Enter your user name and click OK
  13. Tick the box in the Allow column for Full control
  14. Click OK
  15. Click OK
  16. A Windows Security warning will come up; click Yes to proceed
  17. Click OK
Now, you can rename the file mstsc.exe to something like mstsc.exe.bak Then, you can launch mstsc.exe from %SystemRoot%SysWOW64 and you will have 32-bit Remote Desktop Connection running.]]>