Webcam wont work with windows live messenger 9.0

Windows Media Encoder enables the ability for you to "LIVE" broadcast using your webcam utilising Windows Media Encoder 9 and your participant viewers watching you using Windows Media Player at the recieving end. So in other words, you are effectively setting up "your own" live streaming broadcasts either video, audio(such as internet radio) or both from your PC without using the likes of Skype, Yahoo, IM etc.
Check this link if you need any more help
http://forums.logitech.com/t5/Webcam-General-Discussion/Windows-Media-Encoder-9-amp-Your-Logitech-Webcam/m-p/132190

Sounds like your webcam software has been corrupted
Disconnect the webcam
Uninstall the webcam software
Restart your computer
Download the latest webcam software from logitech - visit the website - identify your cam - click on it and select the correct operating system.

http://www.logitech.com/index.cfm/405/&cl=us,en?prodcrid=405

Test it here to ensure your software is not at fault
Click 'Allow' in top window and see if your webcam broadcasts in the left hand window
http://www.testmycam.com/
All working ?
Open WLM
Click ( > ) Open Menu > Tools > Audio and Video setup - set default mic and test > Next - set webcam as default and trim using 'Settings' > Finish

can do one thing,, just uninstall the windows live messenger ,, once, and check with the skype,, then try installing windows live messenger....see whether it works..

You may visit the below link for more information:

http://notebook-solutions.blogspot.com/2009/05/webcam-does-not-work.html

You may check with Windows Messenger.

if you are using a proxy server ...you have to fix the messenger on that server too ( and otherwise if its setted on a proxy and you are using a broadband.... high speed ......)...also ...try to upgrade the windows live messenger to the last update ...if you are using the one it was installed with the windows..its not gonna work until update ..

have you setup cam video and audio

After you start Windows Live Messenger,
expand the view by clicking on the square
on top left next to the red X.
Then on the Windows Live messenger window on the
right side, click on “ “Show Menus.” And then click
on “Show the Menu Bar”.
Next go to the Menu Bar on right side, click on Action.
Go to “TOOLS” and click “Audio and Video Setting
and follow the instructions.
Please let me know if this solved

UNINSTALLMSN RESTART AND REINSTALL
THEN FOLLOW STEPS
After you start Windows Live Messenger,
expand the view by clicking on the square
on top left next to the red X.
Then on the Windows Live messenger window on the
right side, click on “ “Show Menus.” And then click
on “Show the Menu Bar”.
Next go to the Menu Bar on right side, click on Action.
Go to “TOOLS” and click “Audio and Video Setting
and follow the instructions.
IF YOU STILL HAVE PROB LET ME KNOW AND PLEASE DON'T FORGET TO RATE THANX

This could a problem of compatibility. Try to find if your web cam is compatible with windows live messenger for this you have to download from microsoft "amcap.exe". Run it and if you have more than one webcam installed, click the Devices menu and select the one you want to use.
2. Click the Options menu, then click “Video capture Pin.”
3. Under “Color Space/Compression:”, choose one of the following formats:
o RGB 24 (recommend)
o I420
o IYUV
Note: If one of the options above isn’t in the list, then your webcam is not compatible.
Under “Output Size”, choose one of the following:
o 160 x 120
o 320 x 240
Note: If one of the options above isn’t in the list, then your webcam is not compatible.
5. Click OK
6. Close the ampcap application.
7. From your desktop, click ‘Start’ and select ‘Run’.
8. In the run box, type: dxdiag
9. In the confirmation dialog box, click OK.
10. On the System Tab under ‘System Information’, look for DirectX version. Verify that your version is DirectX 9.0. If it is, just click Exit. If your version is older than 9.0 (any lower number), download the latest version of DirectX from Microsoft.

You cannot access camera source until the webcam is running in Messenger - try setting it up from scratch
1) The webcam is working outside of Messenger
2) Reboot webcam by unplugging the USB connection and inserting it again - its important if its been used elsewhere and prior to chat.
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To find out what the requirements are for messenger webcams, check out the following.
http://help.yahoo.com/l/us/yahoo/messenger/messenger9/webcam/mstacamreq.html
Once you have your webcam working outside of Yahoo Messenger you have to configure it to messenger CONNECTION
Open messenger - on top toolbar > messenger > preferences > connection - select 'no proxies' or 'connect direct to the internet' depending on the version of messenger you have
make sure your internet connection and country are correct in the 2 lower boxes > apply > ok TESTING
> messenger > my webcam - warning panel will come on click 'ok' and your webcam will launch. DEFAULT
With webcam still running > Messenger > Preferences > Webcam > Camera Source - set your webcam as default using dropbox. > Camera Settings - adjust settings to suit. > Apply > OK PERMISSION OPTIONS
>messenger > preferences > webcam - make your selections about who you will allow to view you
IN USE Your contacts may need to configure their connection the same as above or they may also get a "webcam not connected" message