Another way to find the answer to the question "Why does not Contact work today?"- Try to enter the site using the domain vk.com , in some cases it helps.
Also is contraindicated to download specialized programs for Contact, from a series of viewing private pages, private messages and other things. Most of them contain viruses that can lead to computer failure, and as a result - the inability to visit any sites.
IMPORTANT!After each method to solve the problem "Why does not work Contact" you need to restart the computer!
Summing up the above, we can draw the following conclusions. If you can not go to the VKontakte site, then maybe there are technical works there, so it's just worth waiting a little. If this does not happen, then most likely it's in viruses. You must update the antivirus program( if the old version is installed), or install a new one. Completely scan the computer, delete all malicious files, and then try again to open the site. Good luck!