If using a license server, uninstall the current License Server, manually delete any remaining DLLs in its installation directory, and then perform a clean reinstall. 3. Reset the SOLIDWORKS Registry
Open the Windows Start Menu, type , and open the application. Select Virus & threat protection .
:Open services.msc , locate the FlexNet Licensing Service 64 , and ensure its status is "Running." Setting the Startup Type to "Automatic" prevents the error from recurring after a reboot.
: Check Run this program in compatibility mode for and select Windows 8 or Windows 7 . Apply and Run : Attempt the activation again. error 6 solidworks activator windows 11
Are you using a or a network license server ?
High UAC settings can block the script from spawning the background processes required to activate the Flexnet service.
Solving this requires a mix of administrative overrides and cleanup of residual license data. Run with Elevated Permissions If using a license server, uninstall the current
In plain terms, Error 6 translates to or "Access Denied" within the Windows environment. When this happens, the activator script fails to register the required SolidWorks Flexnet license server keys into the Windows Registry or fails to launch the background licensing service.
Follow these troubleshooting procedures in order, testing the activation process after completing each section. 1. Enable Administrative Privileges and Compatibility Mode
Did this error happen right after a ?
Did you , or is this a clean Windows 11 installation?
"Error 6" in the context of a SOLIDWORKS activator on Windows 11 typically refers to an or a failure to write required information to the Windows Registry . This error often occurs when users attempt to install or activate older versions of SOLIDWORKS (such as 2017 or 2018) that are not natively compatible with Windows 11.
Optional: Check and select Windows 10 from the dropdown menu. Click Apply and then OK . 2. Enable Legacy .NET Frameworks Select Virus & threat protection