I have a windows 2008 (virtual) machine, which I want to add a pagefile to. However, any time I try to set the page file size, after a reboot it jumps back down to 0. Why is this?
Click the "set" button after you set the size but before you click "Ok"
If your server is a virtual machine, everything is a file already anyway, so there is no point in adding a pagefile. There is no physical memory to offload from, so it doesn't seem necessary to have a pagefile. Not sure what virtualization platform you are using, but perhaps Windows 2008 is detecting that it is a virtual install and basically disabling the page file.