After you create a desktop pool, you cannot change certain configuration settings.

Table 1. Fixed Settings in an Existing Desktop Pool
Setting Description
Pool type After you create an automated, manual, or RDS desktop pool, you cannot change the pool type.
User assignment You cannot switch between dedicated assignments and floating assignments.
Type of virtual machine You cannot switch between full virtual machines and instant-clone virtual machines.
Pool ID You cannot change the pool ID.
vCenter settings You cannot change vCenter settings for existing virtual machines.

You can change vCenter settings in the Edit dialog box, but the values affect only new virtual machines that are created after the settings are changed.