Ps: most of those kind of "virusses" are not situated on your own PC! And therefor will not be detected or can not be cleaned by virus scanners.
The messages are send from websites and servers. The very same websites and servers where you typed in your login and password when they asked you to.
Those websites and servers simply use your login and password to sign in into their own 'Messenger client'. As such they have access to your entire contact list. From there they simply start their own conversation with one of your contacts (thus in your name) and send the links. They also often gather email addresses (thus, all your contacts) to sell them to spam companies.
The only solution is to change your login password so that those sites/servers can't login into your account anymore.
Also,
report the site to the abuse center of MS so they can take some actions against those sites.
And to prevent this kind of stuff from happening is to NEVER EVER entering your login and password on 3rd party sites which promise you to do stuff (eg: see who has blocked you is the most famous hoax).
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Other types of such spam virusses come from infections by clicking on links. Although this because more rare.
But note that "clicking on a link" will not get you infected. The infection happens when you execute the thing you've downloaded when you clicked on the link.
These types of infections are situated on your own PC and could be cleaned by some decent virus scanners. However, since many of those virusses are very simple and use nothing more than very common and 'safe' routines they are quite often NOT detected at all, even if you do have a virus scanner! So be carefull.
In any case:
quote:
Originally posted by JennyLovesAdam
and then un-install messenger plus & live, then re-install them and the problem was gone.
simply uninstalling and reinstalling will never solve those kind of "virusses" though. (Messenger Plus! has got nothing todo with all this and doesn't need to be uninstalled at all anyways). Uninstalling will not remove the "virus", it will simply uninstall Messenger while the virus will still be present.
Certain types of these virusses put a DLL in the installation directory of Messenger. But uninstalling Messenger will not remove those DLLs, you also need to manually remove the installation directory after uninstalling and thus removing those DLLs. Other types of virusses simply put their program files elsewhere on your hard disk.