Problem with Windows 10 Activation

 I had a problem with activating Windows ). This cropped up some time after I purchased my China assembled PC box. It came with Windows 10 installed and it was activated automatically during the initial set up. About a year later, there was some notification saying that Windows was expiring and I needed to take some action, This I ignored because i believed that Windows did not expire. Then there appeared a permanent watermark on my screen that said that I needed to activate Windows. The watermark persisted and I looked for a solution. To cut a long story short -- I found the solution at KMSpico's official website here https://www.getkmspico.com/download. I took note of the zip file password and followed the first link to their mirror site which was  at https://file.fan/3fdd2a62a046a120/getkmspico.com-KMSpico_setup.zip?pt=TVdOcGVEVkhaR3hSWVhaUlZYaEtTSE5KTWs1bVFUMDlPbWF4RWcxYlJYZHlvb0JQaExuN210UT0%3D

I downloaded the zip file and installed the activator. But I had to disable Windows Defender temporarily. When it was installed i ran it and pressed the red button for activation and it worked. Whether this is a permanent solution to activation I do not know. I hope it is.

What I read was that when there is an activation problem, the activation  trouble shooter will try to link to the organisation that purchased the Windows license  for for some kind of verification. I guess the Chinese company that installed this version  of Windows is now not in business and  their servers could not be contacted. I think that organisations that have bulk licenses have sets of keys for verification....but if the Windows troubleshooter cannot connect to these servers, then you might have a problem like mine.