cannot sign in on messenger, says pop up blocker is on How do I fix it?
413641
turn popup blocker off
535274
Download Google toolbar..it has a cool pop up blocker\n\nIn yahoo toolbar..there might be an option for enabling the pop blocker.try it..it could be in disabled state
42895
SOME HOW YOU MUST ALREADY BE SIGNED IN UNDER ANOTHER YAHOO ID,OR IF YOU OPENED UP A PROGRAM THAT USES A DIFFERENT YAHOO ID. IT WILL BOOT OFF THE FIRST ONE, BECAUSE IT'S TRYING TO SIGN-IN THE SECOND YAHOO ID IN MESSENGER ESPECIALY IF YOU CHECKED THE SIGN-IN TO MESSENGER AUTOMATICALY BOX. OR SOME HOW POP-UP BLOCKER IS STOPING THE MESSENGER FROM POPING UP. IF THAT ISN'T IT THEN I DONT KNOW. SORRY!
998631
If all else fails, try removing it and download messenger again, I had that happen to me once, couldn't get it to work so I did that and it solved my problem..Good Luck
358209
go into internet settings and click on allow pop up blockers this will work
1090334
double check ur passwords and make sure that they are the same when u sign in to both ur mail and messenger
41526
What is the error message you are facing?  Please be more specific about your issue.  Are you not able to connect?  Ensure that you don't have a firewall like ZoneAlarm that is blocking Yahoo Messenger.  You can also select to connect without any proxies or Firewaal.  Go to Messenger > Preferences > Connection > Select the No proxies option.  I hope that helps.
21302
The username MUST be lowercase when you try to log in. Try that.  Also,  on the very bottom of http://messenger.yahoo.com/ click, Launch Web Messanger. If that works, that it sounds like a router issue, etc
1084263
Uninstall the messenger and re install it again..\n\nIf the eror is still coming then reinstall the operating system
189314
Where it says a pop up window was blocked, click on that line and you will options to unblock it temporarily. Unblock it and enjoy.
1024440
Delete ur all cookies or reset from yahoo messenger,if that not fix ur prblm than some once else is usung ur 'id` n password,u need to change ur password then.
1043273
Just upgrade to the latest messenger.\n\nThat will fix the problem.
380641
Make sure that you have Yahoo! unblocked from your current Firewall, Antispyware, NAT software...\n\nTry what I said first, if still doesn't connect, then try visiting the link bellow and follow click on the appropriate link depending on your version and problem:\nhttp://help.yahoo.com/help/us/messenger/\n\nGood Luck
311938
get a pop-up blocker.  if you download the new yahoo messenger and load the toolbar, a pop-up blocker is included.
528358
Uninstall it. Reinstall with version 7 here\nhttp://www.oldapps.com/yahoo_messenger.htm
248015
Are you able to get the sign in window to open, then type in your ID and password but when you click "Sign In" nothing happens?\nIf that's the case, do you have a firewall or are you using Windows XP with it's own firewall? If so, open Messenger, close the sign in screen and click "Messenger" at top left of the main Messenger window. Click "Connection Preferences" then choose "Firewall with no proxies". Also make sure your type of connection and your location are correct, click "Apply" then "OK". You should be able to sign in after that.
114087
Try clearing your history & cookies. if you are using yahoo messenger update it to current version also update internet explorer.