Activation issue on Windows 10 or 11: signing in fails or the pop-up will reappear right after the sign-in

If you are struggling to activate Capture One on your Windows computer, it may be due to your local network setup. Please follow the troubleshooting steps below to fix this issue.

• Disable any firewalls (In Windows Defender and in any antivirus or 3rd party firewall application)
• Alternatively, add an exception to the firewall rules to allow Capture One to go through it:

• Make sure the https certificate can be validated on your machine. In order to do that, open a browser, go https://id.captureone.com and click on the lock icon to see if the connection is secure:
  

NOTE: "The resource you are looking for has been removed, had its name changed, or is temporarily unavailable" message is expected. At this step, we only need to make sure the connection is secured.

• If yes, then also go inside the 'Connection is secure' drop-down menu and validate the certificate. On each level, set the drop-down to 'Always Trust':
  
• Add https://id.captureone.com in Windows Internet Properties → Security Tab → Trusted sites
  
  
  
• Use command prompt (search for cmd to open it) to ping id.captureone.com. This means simply typing in 'ping id.captureone.com' and pressing Enter, as shown on the screenshot:
  
• Try to use a different network access point (router). The best way is to try to use a mobile phone as a hotspot, connect to it and then try to sign in. It can turn out that the router causes issues.
• Network related apps which are not browser based (for example bitcoin wallets) can change some https certificate properties, making our activations request fail. In such a case, try to uninstall/temporary disable such apps and then sign in/activate Capture One.