I am inviting people to be friends with me on Messenger, but they are not receiving the email. What should I do?

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Thank you!

hi,

I am trying to add contact in windows messenger but its not accepting the yahoo IDs. Even if someone adding me from yahoo messenger, then the invitation coming to me after accepting still pending notification to accept this contact.
I am still uncertain, is Skype a option or we must change to Skype because Windows Live Messenger will be gone?
I keep getting this message though i know i am not signing in at another location.  I have changed the password multiple times yet i keep receiving this message and it signs me out of messenger every time which is extremely frustrating.  It doesn't just happen once, it happens repeatedly! Anyone have any thoughts?
 After I log into messenger and go to another site, using messeger, when I return to messenger it shuts down and I have to log in all over again. Just started hppening a few days ago
   Porque o messenger ñ esta aceitando a minha senha ?????????????
 When signing out of messenger why does it say all windows will close?  And my message options page won't let me make some changes?  re personal options.
je n'arrive plus à me connecter sur windows live messenger, il me marque réessayer a chaque fois, puis erreur code 800488eb. Pouvez-vous m'aider cela fait 2 jours. Bien a vous 
merci de me donner la soltion j'ai fais 3 sms au suport ave des codes pour avoir de nouveau msn messenger live mais je n'arrive pas a l'avoir malgré que j'ai du payer 3 fois 4.50 € ou est le problème
I have in my address list on hotmail and messenger,  contacts that are no longer valid,  I would like to delete them definitely,