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Just downloaded the PTR client and pulled the 8.x GB installer.
When launching for the first time after fully downloading the client in windows 7, with admin creds (to elevate past UAC), I get the following error message when I click on "PLAY"
"Failed to launch a critical file. Please close all other applications, temporarily deactivate your anti-virus software, and try again. Alternatively, log in as an administrator and try again".
Looked on the forums and google search -- no results.
Here is my fix. On the desktop icon for Diablo 3
1.) Right Click
2.) Select Properties
3.) In the "Target" line go to the end of it (place a space after the last ") and type " -launch" (no quotes)
Doing this bypasses the launcher and forces the game to go straight to loading. So i bypassed both errors i get. The 1 because my graphics card is not supported and the "A critical file failed to start" or whatever.
I hope this works for you!
I had this problem after I installed Windows 8. I reinstalled Diablo 3 and tried everything mentioned, nothing worked until I tried compatibility for XP service pack 3. It runs now but still gives me a warning that Diablo 3 is incompatible. For now though I can play again.
this is the support article for the error in the OP
this is a link to my post for troubleshooting steps.
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