I am having problems with some of our XP VMs acting as virtual desktops through XenDesktop. I cannot narrow this down to any particular problem because I have had it happen on VMs which are using the citrix provisioning server, as well as VMs which are using the Hard drive to boot. I get an error which says "A general system error occurred: Failed to create journal file provider" And the VM will not power on.
The Journal file is usually created on the ESX host under /var/log I would check you are not running out of space.
To do this log into the esx host and run df
check the output you get and specifically the % next to /var/log
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VMware, Citrix, Microsoft Consultant