Today when updating on of our vCenter 6.0 to 6.0 update 2 we get this strange error:

“Installation of component VMware Python components failed  with error code ‘3010’”

Troubleshooting the problem, it seems that is only related to some temporary files in the installation folder.

So the solution/workaround is to clean Windows temp folder(I use CCleaner), reboot the server and then re-run the update again. Is that simple.

Hope this can help.

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Update: 09/04/2017

Today when try to update from 6.0 U3 -> U3a I get the same error. The solution above did fix the issue and I was able to apply the update.