Why might SSL (https) certificates not work in all browsers?

Question

Browsers

All browsers consider the ssl of all sites to be invalid. The time and date are set correctly. What could be the problem?
OS: Windows 7
VK certificate screen (browsers consider it invalid): https://yadi.sk/i/Vq-pWBhqmmE8L

Answer 1

And a screenshot of any untrusted certificate (with information about the issuing certification authority) drop here? Perhaps you SSL-bump-yat.

Answer 2

Look at here

Answer 3

And what OS?

Answer 4

Removed root CA certificates. Certmgr.msc