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.
If you are installing an old version of SolidWorks (e.g., 2017–2020), it may not be officially supported on Windows 11, leading to instability.
Many users right-click and select "Run as administrator," yet still get Error 6. Here is the correct method:
Using an older activator with a newer version of SolidWorks. Step-by-Step Fixes for Error 6 on Windows 11 Follow these steps in order to resolve the licensing error. 1. Disable Windows Defender and Antivirus error 6 solidworks activator windows 11
Error 6 can originate from orphaned registry keys left by previous SOLIDWORKS installs.
6.1 Legal and Recommended Path
Choose or select Windows 10 compatibility if prompted. 5. Check the License Manager Ensure the license is correctly recognized. Open SolidWorks. If the activation fails, it may show the License Manager . In plain terms, Error 6 translates to or
Discounted academic licensing intended for students, educators, and researchers.
Look for the note at the bottom of the General tab. Check the Unblock box. Click Apply and then OK . Long-Term Prevention Tips
This article is for educational purposes only. Using cracked software, activators, or keygens violates SolidWorks' End User License Agreement (EULA) and may expose your system to security risks. Purchasing a legitimate license from an authorized reseller is the only safe and legal way to use SolidWorks. Many users right-click and select "Run as administrator,"
Newer Windows 11 updates sometimes conflict with older activators (especially for versions 2017–2019).
Windows 11 introduced stricter security measures than Windows 10, including:
Run the cleanup process to wipe the current (broken) serial numbers.
If Error 6 persists across older CAD deployments on Windows 11, it is highly recommended to migrate to a natively supported version of the CAD ecosystem. SOLIDWORKS Version Windows 11 Compatibility Status Fully Supported SOLIDWORKS 2021 Limited / Conditional SOLIDWORKS 2020 and Older Unofficial / Known Script Errors Cannot install SW2017 on a Windows 11 laptop : r/SolidWorks
The most frequent cause is a lack of write-access to the System32 folder or the Windows Registry. Right-click your file. Select Run as Administrator .