Q: How can I fix “License State Unknown” on Windows?
Windows Firewall may be a reason for “License State Unknown” error message. To fix this:
- Go to Network and Firewall Protection tab of the Windows Defender Security Center
- Select the “Allow an app through firewall” option
- Then select “Change settings” and then “Allow another app”
- Add AppsManager and Perfectly Clear.
That should fix it. The next time you run Perfectly Clear or AppsManager, they should properly detect the license state.