Category Archives: Errors

vSphere Client 4.1 error…

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… Read More »

Guest warning after upgrade to vSphere 4.1

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… Read More »

Upgrading Windows 2008 from virtual HW 4 to 7 may cause problems

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… Read More »

Extend disk with snapshots – How to fix the error

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… Read More »

32-bit ODBC DSN required for vSphere running on 64-bit OS and MSSQL

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… Read More »

Problems uninstalling VMware Tools

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… Read More »