"could not sign in please check your network connection and try again"

I'm not running Peer Guardian, so this is probably an open issue for many of us.

My brand new Macbook Pro, that came with Facetime Version 1.0 (159), has the same issue: "Could not sign in. Please check your network connection and try again."

Curiously, if you try to create a new account from within Facetime, it has no problem communicating with Apple. However, attempting to use the new account results in the same "Could not sign in" message. This is likely due to an open ports requirement of Facetime, but it would be great is someone had a solution.

Eureka! Despite my earlier post, I didn't give up. But none of the solutions on this thread worked for me.
However, a solution posted by GHBMac at 8;43 am 7 March gave me a clue. Instead of my Apple ID (which I'd checked and verified a dozen times) I entered my email address. Bingo!
Thanks, GHBMac.

Apparently, you can only sign into FaceTime for Mac using an email address that's been previously 'verified' by Apple.

Log into your account at https://appleid.apple.com and either: verify the email address that you want to use for FaceTime, or log into FaceTime using an email address that you've already verified.

Does anyone have a solution to this? I just got Facetime on my MacBook Pro and I keep getting this error message. I have a valid AppleID and password that is good. From reading other posts, I have yet to see one that contains a solution to the MacBook Pro. I've tried the uninstall and reinstall to no avail. Suggestions?

I run Norton and discovered that I had the "ocspd" application blocked. I allowed that application to access the Internet and Facetime logged right in.

I don't have Norton. Just the basics that came with the computer when purchased.

SOLUTION FOUND!!!!!

when operating on wireless network, change your operating IP address. Add +1 to the last digit of your IP. worked for me. obviously there is some kind of bug that ends up blocking your IP address from contacting apple through the program. lots and lots of bugs for this consumer released application from apple. I thought apple was about simplifying technology, and making things at a high level, not releasing applications that barely function and not supplying the support needed by their own customers. I love my Mac stuff, but seriously apple. figure your S&*T out.

Same problem encountered for my new MacBook, FaceTime can never be connected until now
Just want to ask, for the above solution, precisely how can we add "+1" behind the "operating IP address"??

open network preferences in your airport menu bar, then advanced, then the TCP/IP tab, "copy" or write down what your current IP address is, then select DCHP with manual address from the pull down menu, paste your old IP in, but if your IP ends with a 6 make it a 7 or 8. then save preferences and apply everything. this should work. every wireless router will allow for 10 or 15 different IP's because each computer has to have a different one to have an internet connection. let me know how it works

drew

i've got the same problem here, it works with my macbook pro using different account and using my existing apple id... but when i install facetime in my iMac, i can't sign in even im using my apple id....any suggestions guys out there....

I also can't login with my account, but I can with another account user on the same MacBook Pro.

I think the problem is in facetime config files. Going to figure out all facetime config files and delete them in my main account.

hey guys, all of a sudden, i can use facetime in imac now using my apple id.... but i got another issue on my macbook pro, it keeps popping out window saying stop using headset... where in fact i am not using headset... and after a while my macbook goes blank ( black screen ), backlight is gone as if it shuts down, the only lit up is the sleep led indicator.... did it happen to you guys out there??

Thanks so much for the tips.
But it doesn't work for me.. Apple Care asked me to reinstall the OS, and I did just now, same 'please check network connection' message responded.
It is definitely the problem of the NEW MacBook, the same network works fine with my iTouch...!

Still no luck. Tried the DNS tip mentioned above, but still the error message.

same problem for me. desperate for a solution.