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4.4.1 Editor Not Launching from Launcher or cmd.exe

UE4 subscription was started tonight, installer downloaded, and installer completed on Windows 8.1. Launcher was executed, 4.4.1 was downloaded.

Steps to Replicate

 #Launcher Method:

  - Open Launcher
  - Log In
  - Click Launch 4.4.1 Button
  - After a wait, button going grey, the button returns to yellow.


 #Using CMD.EXE (using parameters in Launcher's shortcut):

  - cd C:\Program Files\Unreal Engine\
  - 4.4\Engine\Binaries\Win64\UE4Editor.exe
  - Error Message: "access denied"

Expected Result:

Editor starts.

Actual Result:

Editor does not start.

Additional Information:

Rebuild command in Launcher was attempted.

Expected log files are empty. Success log is "Just a record of success."

DxDiag.txt

Please assist. I'd hate to have thrown $19 away.

Product Version: Not Selected
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asked Aug 27 '14 at 05:36 AM in Installation & Setup

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Composition4
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1 answer: sort voted first

Please close this ticket. This issue has been self-resolved.

For future reference, owners of Avast! Anti-Virus need to add exclusions to all build tools, batch files, and executables found in their UE4 install directory.

A second solution is to disable Avast! Shields Control for the duration of their editing session.

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answered Aug 27 '14 at 12:55 PM

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Composition4
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avatar image Stephen Ellis ♦♦ STAFF Aug 27 '14 at 05:20 PM

I am glad you found the solution. Thanks for the update.

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