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The next of the additional products, I am going to install, is the GP PowerShell; this allows you to use PowerShell cmdlets to, for example, deploy companies additional tenants if using a multi-tentnqat implementation.
There is a problem with the GP PowerShell on the installation media. Instead of using this, you need to download a new installer for it, which is available from CustomerSource (login required).
Once you have downloaded the file, and unzipped it, launch the Microsoft_DynamicsGP18_PowerShell.exe: