After installing drivers during a Windows-installation you might get this error message when you select a drive to install it on “windows is unable to install to the selected location. Error 0x80300001”
This is another (strange) way for Windows to say that you have not inserted the Windows CD/DVD again. Put it back in again, wait a second and then the error message should disappear. (If it does not, try to hit refresh after putting the CD in)
I had a machine that started hanging when running yum update on it. And the only way to actually stop yum then was to kill the process from another shell, pretty strange.
I noticed that it was trying to look up and old proxy server which was not in use anymore, the machine itself got online without issues on other services but then i realised that the file “/etc/sysconfig/rhn/up2date” had a entry for yum proxy settings.
It is also worth checking all files in your “/etc/yum” folder and make sure that none of your repo files have dedicated proxy settings defined since that will override anything from up2date.
When commenting out that proxy setting, yum started behaving again.