If a simple re-import doesn't work, you may need a "clean" slate:
If the software opens without the error, you can make this permanent: Right-click the shortcut again and select . Go to the Compatibility tab. Check the box for Run this program as an administrator . Click Apply and OK . Method 2: Manually Re-import the License Key File (.lkf) If a simple re-import doesn't work, you may
Note: Be careful when editing the registry. Modifying incorrect values can destabilize your system. Press Windows Key + R , type regedit , and press . Click Apply and OK
Sometimes the software loses the "path" to the license server or file. Press Win + R , type sysdm.cpl , and hit Enter. Go to the tab and click Environment Variables . Look for any variables related to Labcenter or Proteus . Press Windows Key + R , type regedit , and press