Windows 10 MT4 not opening Demo Account

Hi, I hope someone can help with this issue. I am running several MT4 terminals on a Windows 10 (1809) laptop. When I try to open a demo from within MT4 the "Next" button does not become activated. I have filled in all the fields and also click on "I agree to receive your newsletters". This happens in all the MT4 installations. It used to work perfectly on Windows 10 1803 but I updated the laptop and Windows updated to 1809. I have tried just about everything including installing as Administrator but nothing seems to work. Any help would be greatly appreciated. Thank you

Its not windows but almost all brokers now require you to open demo from their website. I remember last year reteid2222 was asking if anyone knows of any broker that still allows fast opening of demo from mt4.

https://www.forexfactory.com/showthread.php?t=845064

Just tried with FXCM and demo opening is working as expected.

Hi Liovannix and FerruFx, Thank you both for your responses. I use FXPrimus as my broker and on my second laptop I am able to open the Demo account from within MT4 with no issues. On the laptop where it did not work I did the following and it resolved the matter. I downloaded MT4 directly from the Metaquotes website and installed it. I then tried to open a Demo account and it worked perfectly. I then realised that it was MT5 that I had installed but nevertheless I closed down the MT5 platform and then opened my MT4 FXPrimus paltform and then tried opening a Demo account. It worked perfectly and I am now able to open demo accs from within MT4 from all my installations. Not sure why it is working now but just glad that it is.