Invalid security certificate

[agentzero]

Aye well, it's worked fine for years. My wife has Windows 10 and I'm not keen on that.

But that's just me. The laptop is 12 years old, and I'm still using an 18-year old Nokia 6310i, and wouldn't swap it for anything else.

Your data is at risk using an old operating system. If you don't like windows, try ubuntu linux or mint linux. Mint linux has the appearance of windows7 and will run much faster on your hardware.

[DealorNoDeal]

I suspect the issue relates to DST Root CA X3 Certificate Expiration Problems and Fix - The Tech Journal (stephenwagner.com) and you've had it over 6 months.

A fix can be found at Let's Encrypt DST Root CA X3 expiry Sept 30th 2021 | Certify The Web Docs

But the reality is that that computer should contain nothing of value if you are connecting it to the internet as it's a hacker's dream (given the 30ms it will take to hack into it)

That seems to have sorted it. Thanks.

I take on board what everyone's said about Windows 7 security. I don't keep anything of value on the laptop, and I'm probably going to have to replace it soon anyway because the display is a bit on the blink, so it's not really worth upgrading it to Windows 10 or switching to Linux.