Starting today, my system have a very odd behavior.
I came home and my PC has rebooted (Windows or McAfee update?)
On starting my sessions, I get an error message from an application that "can't register its class name".
There are no other error message, however, many applications don't seem to work properly.
The Windows task bar does not show buttons for running applications.
McAfee icon is visible in the system tray but is not responsive (right click does not show menu).Click on the McAfee anti-virus program in the menu doesn't start it either. McAfee Virtual Technician starts the stop automatically. I tried to re-installed it... the installation script says that Windows Installer is not present.
Outlook will start but will not fetch the email (I am using vPop3 Mail server on the same machine. I can access the email directly). From Outlook, testing the account setting says everything is ok.
Firefox works (thankfully) but IE8 will not start. No error message.
Windows Services Manager will start, but shows no content at all in the "advanced" tab but list services in the Standard tab (I have a French windows, so the tab name are my translation)
My guess is that something is broken in Windows... any suggestions where to start looking?