Why some time can't add PSSnapin for Exchange?

For some time now have stopped work team:
Add-PSSnapin Microsoft.Exchange.Management.PowerShell.SnapIn

What stopped to work out where it had previously worked without a problem, including the domain controller.

Exchange 2016
PSVersion 5.1.14409.1018
March 19th 20 at 08:58
1 answer
March 19th 20 at 09:00
Check the following:
1. Must be installed tools Exchange Management Tools (from an image of the mailer).
2. Depending on the version of Changi, snap-in PoSh added this:

Exchange 2007
Add-PSSnapin Microsoft.Exchange.Management.PowerShell.Admin;

Exchange 2010
Add-PSSnapin Microsoft.Exchange.Management.PowerShell.E2010;

Exchange 2013 & 2016 & 2019
Add-PSSnapin Microsoft.Exchange.Management.PowerShell.SnapIn;

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