This is an update for this post, it was locked because it was old ;) Ok, not really a question or problem, just a solution, so people can find it when googling ;) PROBLEM: If you are still using Windows Live Messenger 8.5, you get this popup everytime you login: "Want the latest version of Messenger? It's ready to be installed" or "Pretende obter a versão mais recente do Messenger? Está pronta para ser instalada" (Portuguese version) SOLUTION: 1. Download and run Resource Hacker 2. Make a copy of C:\Program Files\Windows Live\Messenger\msnmsgr.exe (just in case) 3. Use Resource Hacker to edit msnmsgr.exe 4. On the left pane, Navigate to Version Info -> 1 -> 1033 5. On the right pane, replace VALUE "ProductVersion", "8.5.1302" with VALUE "ProductVersion", "14.0.8089.726" 6. Push the "Compile Script" button 7. Save (ctrl+s) and Exit Open Messenger and login, popup gone! NOTE FOR FUTURE VERSIONS: I tried using 15.0.0000.000 and also worked, so i guess this number might work for all future versions of Windows Live Messenger 2009. If not, just open Windows Live Messenger 2009 at someone else's computer, go to Help -> About, and see what the new version number is. Will this trick work for 2010 and greater versions? Who knows... :) I only do what the voices in my head command...

Or you just update... No reason not to.

Wow, update... how come i didn't remember that? So that is what that annoying popup was for? Now, for the adults part... Many people have older computers like me; Windows Live Messenger 2009 installs 3 or 4 programs just to run (Contacts, DW 2.0 Client, Microsoft Visual Studio Runtime), they are called Live components and are installed even if you just select Windows Live Messenger. On the other hand, Windows Live Messenger 2008 is much lighter and doesn't install aditional programs. Why upgrade it if it works fine just like it is? Just because M$ nags us with an update popup? If you want to keep it, use my instructions. If you don't, IGNORE THEM because they are not for you. See how my reply was constructive? I only do what the voices in my head command...