A. Mikkelsen

VMware ESX scripts, commands, tools and other nice to know things that will make your virtualization days easier!!!!

Browsing Posts in Errors

After I upgraded vSphere vCenter & Client to 4.1 258902, I been getting an error in the vSphere Client. A internal error occured in the vSphere Client. Details: Object reference not set to an instant object. The solution is provided by VMware. http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1033560 It’s just replacing a DLL file 🙂 The error is only with […]

After we upgraded to vSphere 4.1, the SCSI adaptor of all our WINXP guests changed from LSI Logic Parallel  to BusLogic Parallel. This change should normally not create any warnings or problems it VMware Tools are up to date. But after the upgrade all our WINXP guests got the following warning when powered on in […]

After we upgraded to vSphere 4.1 we have been expirence problems with VM’s entering FullScreen mode. The issue is that 9/10 times a VM enter FullScreen mode, you are not able to move the mouse to the bottom part of the screen and select a program or the Start option. VMware is aware of the […]

Just found this very interesting article http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1013109 describing a problem with Windows 2008 and ESX 4 virtual hardware version 7. In short the article states that you might have the disks go offline in a Windows 2008 VM if you Upgrade virtual hardware from version 4 to 7 Installing a new VM with virtual hardware […]

Yesterday I by mistake extended a disk on a VM that had snapshots. Using vmkfstools. Kind of like this thread (http://communities.vmware.com/thread/238035). This resulted in the following PowerOn error: Failed to power on Servername on Host in Cluster: Cannot open the disk ‘/vmfs/volumes/LUN/Folder/VM.vmdk’ Reason: The parent virtual machine disk has been modified since the child was […]

Last week I upgraded a Virtual Center server from Win2003 & MSSQL 2000 (32-bit) to Win2008 & MSSQL 2005 (64-bit). During the installation of vCenter it asked for a 32-bit ODBC even though all the new systems was running 64-bit. After a some time on Google i found that Windows 64-bit also includes a 32-bit […]

Over the past few months we have seen a few Windows servers with a black screen. Meaning You can’t see the logon promt You get a black screen when you connect with RDP We found that the problem was caused by a change in the Windows color scheme. The solution is to copy the color […]

Today a one of my customers encountered an error when trying to revert to an snapshot. They recived the following error: “error encountered trying to restore cpu state from file /vmfs/volumes/…./xxxxx.vmsn” After a bit of googleing if came up with the problem. The error occures when a VM with snapshots (taken when VM is PoweredOn) […]

To night I had problems with uninstalling VMware Tools in a VM after updating to the latest ESX release. The uninstaller kept asking me to insert the “VMWare Tools” disk and click OK”. In the popup window there is pull-down field labeled “Use Source” and in this field is the number one (“1”). If I […]