Secure Connection Failed

[Tyquan]

I've been having a problem lately where when I try to access certain websites/apps/programs from Mac computers, windows 7 computers and iPhones. I get a message along the lines of 'secure connection failed' it's not always EXACTLY that warning, it varies depending on the device, on iPhones it says something about trusting a certificate, other times it says the websites signature is bad etc. It comes and goes and affects different devices at different times, there's 3 iPhones, one windows PC and an iMac that I'd affects (all the same errors and warnings on each). It ONLY happens when connected to the home WIFI. We are running a DLINK DSL-2900AL, these errors occur on the 2.4ghz and 5ghz band, I have tried changing the time on the router itself, and on all devices, i have turned the router off for half an hour, I have reset the router to factory settings. as soon as I disconnect from the wifi the problem goes away. I have had the router for roughly 4 months prior to these problems and it worked fine. Any help would be appreciated, any links to support topics would be appreciated thank you in advance! Sorry if this is the wrong place to post but I am kinda desperate.

 

[schwatzz]

Try setting a static DNS on your computer. If not, then I think it might have to do with the NTP server not getting the right date. You might have to set an NTP in your router.