"connection failed" mac app store

So I feel like a chump, but none of the stuff in here worked for me. I seriously tried it all. Would it be feasible to somehow go back to 10.7.3 and then just download mountain lion from there and hope everything works okay from then on out?

I am also facing the same problem since updated to 10.7.4 and i tried all the above suggetions but those did not work for me, please help me to solve this problem or else can any body guide me how to get back to 10.7.3.

Make sure that your clock is set to "Set date and time automatically" After trying everything else I could find it turned out that my setting for the clock was off and this was what was causing my problem.

Click on the clock in the upper right hand corner of your screen

Select "Open date and time preferences..."

Make sure there is a check next to "Set date and time automatically:"

Good luck.

Just to add the 'arthurlockman' solution sorted it for me, many thanks for working it out!

http://b.rthr.me/wp/?p=356

Go to system preferences, date and time, tick automatically set date and time!

I couldn't log in because my mac was still in last year's time.

I hope this is why all you guys can't log in because this is the easiest fix.

Perfect fix for problem since mountain lion!

I was having the same problem. Updated from Snow Leopard to Mountain Lion and even though I had a perfectly good internet connection, both the App Store and iCloud were telling me it could not connect.

I followed these instructions: http://b.rthr.me/wp/?p=356

And it solved my problem. But read the instructions carefully and go through each step.

Gah! You beat me to it! I was just going to post the same tip.😁

The instructions in the blog fixed both my App Store login problem and the certificate problem I was having in Safari as described here:

https://discussions.apple.com/thread/3941688?answerId=18956717022#18956717022

I found the blog solution right at the bottom of page 6 of that discussion.

Thanks alfredo87 - your post fixed the problem for me!

Thank you thank you, have been trying to find a solution for days! Yours worked

Finally fixed my problem with the App Store - Thankyou.

I tried everything in almost every forum, the certiificate setting (class 2 and 3), dumping all kinds of plists, caches, logging in and out of iTunes... And you know what made it work finally? A reboot of the mac. Geez.....

I did this fix and still had no luck...until I got on a different network. Something set by my network administrator is causing all the fuss. It was definitely the 10.7.4 update that instigated it all because everything was working fine before then.

This worked for me as well, I had 4 blue crosses showing. They only disappeared after a shut down & start, rather than a re-start.

One variation I had was that I additionally had to set up a new admin user & delete my old one, sign in then worked perfectly.

I have been frustrated with this problem for the last 6 months & can at last move on to Mountain Lion.

This "Connection failed" problem has been driving me crazy. Tried everything, but nothing worked...until this. Thank you! Now if I could just get Pages to work again...