quote:
Originally posted by CookieRevised
Sure...
You first need to install the lower version (in this case WLM 2009). After that you make a copy of the complete installation directoy and all its subdirectories (and make sure you copy everything, including hidden files etc if any).
Then you install the later version (in this case WLM 2011), so the previous (old) version gets 'updated' in its original installation directory.
From now on you can use the new version (from the original installation directory) and the old version (from the copied directory).
Did you try this method?
I don't think it works, because the process
msnmsgr.exe in both versions 2009 and 2011 uses another process called "
wlcomm.exe" (you can find it in
C:\Program Files\Windows Live\Contacts).
If you rename the WLM 2009 installation directory and install WLM 2011,
wlcomm.exe will be upgraded and will not work with the old version (WLM 2009).
It's also useless rename C
:\Program Files\Windows Live\Contacts before upgrading, because
msnmsgr.exe looks for
wlcomm.exe in
that directory.
The trick you explained worked for WLM 2008 and 2009 versions, because in
WLM 2008 there was no wlcomm.exe .
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