I Do not know where to post this but it is bugging me. My computer will not be able to upgrade nor will a browser upgrade work with my machine due to age. Does this mean I am soon done with the forum except for read only? This issue is occuring across several forums.
Use your Win10 machine. If that fails, we are both screwed. 
Heya Thrumond, I recognize you from Airgun Nation. Nice to see another pnuematic fanatic in the laser space.
The question I have for you is… what browser are you using when you get that error?
I.E. explorer? Microsoft has ended I.E. support. Have you tried Firefox or Chrome?
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Hey I wondered if it was you in past posting.
I am using Win 7 (Microsoft Abandoned) with Firefox. I can’t upgrade the browser because OS will not support version of Firefox. As stated I have a Win 10 machine soon to also be an outdated Microsoft product but I don’t really want to use it live on a network connection if I can help it. I have been using Windows since VER. 2. I think that Windows 10 will be the end of playing endless upgrade games for me.
The Firefox ESR (Extended Support Release) may still be usable and receive security updates on Windows 7.
Uh, I see “Extended” means until August 2025 in this case: