I am having a problem with Windows Live Messenger. This has been an issue ever since I got the PC on both Windows Vista and Windows 7. The PC is not even a month old and Windows Live Messenger installs fine. Sometimes I can access it on a rare occasion. Most of the time it is running the process tree when I look but still can't open up the actual program. I try closing it from the Task Manager and reopening but it doesn't help. I can click on the icons over and over and it just loads more instances of the messenger. I have no idea what's causing this. Any ideas?
Many users have had issues with Windows Live Messenger and its predecessor MSN Messenger failing to load properly. One of the most common issues is with the router though it's also possible that you have a bad installation on your computer. Let's take a look at some steps you can try.
Reset the Router
The first step is to reset the router. Your router should have a reset button on it. If not an actual button, there may be a tiny hole in the back where you can insert an unbent paperclip. If your router does not have a manual way to reset it, simply unplug it from the power source and let it sit for a minute or two. Plug it back in and see if the problem resolves itself. Resetting the router has solved this issue for many Windows Live Messenger users.
Repair Windows Live Messenger
You can also try repairing your installation of Windows Live Messenger. Go to Start and type "Programs and Features" into the Search bar and then click its link under Programs (or go to Control Panel > Programs and Features). Find Windows Live Essentials in the list of installed programs and click on Uninstall/Change. Choose the Repair option and click Continue. This will repair your installation of all Windows Live Essentials programs, including Windows Live Messenger.
Whenever a program fails to respond as expected, it's not a bad idea to update your operating system to take advantage of any potential "fixes" that may have been issued by Microsoft. For example, if an external program or device is known to interfere with Windows Live Messenger and Microsoft has created a patch that fixes the issue, the patch will be released as an Update. Go to Control Panel > Windows Update and check to see if any updates exist addressing this issue.
Use the System File Checker Utility
You can also try running the System File Checker which will scan your operating system for file corruption which could be interfering with your computer's performance. Press the Windows Flag key and the ‘R' key at the same time to open the Run dialog and then type in: sfc /scannow
Follow the prompts to allow the System File Checker to scan your computer for missing or damaged operating system files. You may need your original installation discs to replace these damaged files.
Uninstall and Reinstall Windows Live Messenger
Another option is to try uninstalling and reinstalling Windows Live Messenger.