An Application Control policy has blocked this file.

O

olivierdemoustier

Active member
Suddenly when I tried to upload my sketch I get this error. Never had this before.
Windows11. Teensy 4.0

error:
Compilation error: fork/exec C:\Users\olivi\AppData\Local\Arduino15\packages\teensy\tools\teensy-tools\1.60.0/teensy_secure.exe: An Application Control policy has blocked this file.
 
It is a 'protective' AntiVirus 'feature'.

That folder should be marked 'safe' or at least that file in whatever the AV software installed is. Or perhaps go to that folder and maybe the file is 'blocked' in Windows. right click Properties and "Unblock" if that is the case.
 
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