so looks like i am affectedby this issue.
“some” browsers this morning started saying the certificate was expired, when it wasn’t.
i renewed the certificate anyway just to be sure.
i think i am being affected because we have some andoird devices that run andoird 5.x (samsumg have no updates for them). we use those devices for 1 specific android app and for occasional web access to our own employee website.
if i use firefox it seems to be ok, as i assume firefox has built-in support for this, whereas the samsung browser says the site is not safe.
strangley i also has safari on iOS15 say the same this morning, but after renewing the certificate it is now fine. chrome desktop has had no issues at all before or after the certificate renewal)
so am i basically out of luck due to the android version on some of the devices we have?
i’m running IIS and the CTW client is up to date.