This morning I was attempting to install the VMware vSphere Update Manager Extension using the vSphere Client Plug-in Manager on a 32-bit Windows 7 Professional workstation and I received this error “Setup cannot Continue. VMware vSphere Client is not found to be installed on this computer. VMware vSphere Update Manager Client 5.0 Update 1 can be installed only on machines where VMware vSphere Client is present.”
I searched the VMware KB but could not find any KB articles referencing the error. I ended up finding a fix by searching the VMware Communities in this thread. Looks like there has been an issue with this for a while now. Not sure why I have not run across the problem before now.
Once the installation starts cancel it. If you let it continue till it fails it will clean up the installation package from %TEMP%.
Find VMware-UMClient.exe in the %TEMP% directory and copy it to the root of the C drive. Then right click the VMware-UMClient.exe and choose to Run as Administrator.
Once the installer completes close and reopen the vSphere Client. Check the Plug-Manager to verify that the correct version of VUM is installed and enabled.
VMware Update Manager is now updated to the current version and enabled. All is well.