This is the most effective fix for the vast majority of users. Because drvsetup64.exe is an executable that modifies system drivers, antivirus programs often flag it as potentially unwanted behavior.
Noted in malware analysis reports during the installation of temperature logger software. Failure to Communicate · community · Discussion #58549
A previous failed install left a locked or read-only drvsetup64 folder.
The error message typically occurs when installing drivers for devices using the CH341 or CH340 USB-to-serial chips. This is a common issue for users of laser engravers (like LaserGRBL), WCH-Link debuggers, or thermal loggers. Root Causes
The installer doesn't have write access to the target folder (e.g., C:\Windows\Temp or the current working directory).
Move the installer to C:\installer.exe and run from there.
The installer lacks the administrative rights to create folders or execute files in protected system directories.
It looks like you're encountering an error related to a missing or inaccessible file:
Would you like me to help you identify exactly which software or driver this error comes from? If you can share the or the application context , I can give more specific guidance.
Disable your antivirus or Windows Real-time Protection briefly while running the setup.
The archive might be damaged, causing extraction failure.
