Make sure you apply the latest security updates from Windows update. If Windows update is not working for you or does not find any updates, please check solutions on Microsoft website. Otherwise, you can also try to upgrade by using the Media Creation Tool.
Alternatively, you can try to download updates manually from Microsoft website:
You will need to use a supported build of Windows which still receives security updates from Microsoft.
If you have a modified/cracked version of Windows where you are unable to install updates, we can not support such versions. You will need to find a way to install updates or install a legitimate version.
Windows Enterprise LTSC versions are not meant for gaming PCs, therefore we do not usually support them, although the most recent LTSC builds should still work without any issues.
If none of these solutions work for you, we would kindly ask you to get in touch with us via this link and our dedicated CS team will assist in getting you up and running: Contact Support