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RubenIbarra-1783 asked Sopor-0610 answered

Remote Desktop EXTREMELY SLOW - Windows 10 Pro 20H2 update

After installing the latest update Windows 10 Pro 20H2 my Remote Desktop connections became extremely slow! To the point you can no longer work with it as it takes 3-5 seconds per keystroke!

Any ideas how to solve it?

Or how to go back to a previous build?

Thank you.

remote-desktop-services
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ElevenYu-MSFT answered
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EscamillaJeffe-2555 answered

I have noticed this issue too starting with 1909. I ended up manually rolling the binaries for mstsc.exe and mstscax.dll back to a copy I had of 1803 and it's working much better. I have seen this happen with numerous users on the domain and for every person rolling those two files back fixed it. Microsoft must have changed something late last year. I keep trying updated versions with no luck.

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EscamillaJeffe-2555 answered

Btw, if you want to know how to fix it

  1. Get a copy of mstsc.exe and mstscax.dll from a system running 1803

  2. Open an administrative command prompt

  3. Run the following commands

    takeown /f c:\windows\system32\mstsc.exe
    takeown /f c:\windows\system32\mstscax.dll
    icacls c:\windows\system32\mstsc.exe /grant Administrators:(F)
    icacls c:\windows\system32\mstscax.dll /grant Administrators:(F)

  4. After this you can replace the two files with the older files

  5. Launch and you're good to go!


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Sopor-0610 answered

I have the same issue. If i use the OSK i get double letters and sometimes the buttons get stuck and it all started after a Windows Update i did in November.

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