Trying to vMotion (in my case a cross-vCenter vMotion from a 6.5 system to 6.7) a VM the error “The input arguments had entities that did not belong to the same datacenter.” occurred. Other VMs were migrating fine.
The CD Drive in the source VM was mapped to (although not connected to) a Content Library ISO file.
Point the source VM CD drive at “Client Device” and retry the vMotion.
Trying to access one of these static files directly also fails and just shows the message “The page cannot be displayed because an internal server error has occurred.
In my case, the site was referencing the FontAwesome package which uses the WOFF file type. In the older IIS this MIME type was not registered so required a manual entry in the configuration. In the newer IIS this is handled natively and the manual configuration is now causing a problem rather than remediating one.
Check the web.config file for a reference to “woff” for example
<mimeMap fileExtension=”.woff” mimetype=”application/font-woff” />
and comment out or remove this line.
Refresh the page in your browser and it should now load correctly.
When installing VCSA onto an existing vCenter environment (as a VM, not as an in-place upgrade of that environment), on Step-9 “Select Datastore” the installer shows the message “Error Fetching Datastores” and no datastores are listed so installation cannot continue.
Error Fetching Datastores
Go back through the installer and select an ESXi host rather than the vCenter server in Step 2 “Connect to target server”. Remember to use the host credentials which may differ from the vCenter credentials. The Datastores are then discovered correctly and installation can continue.