"ERROR: [5091-208-7-80131501]Failed to set folder visibility on mailbox" (4319719)

ERROR: [5091-208-7-80131501]Failed to set folder visibility on mailbox 'user@domain.com':

Microsoft.PowerShell, , C:\Users\coexistence.manager\AppData\Local\Temp\2\tmp_<fileID>.ps1xml : File skipped because of the following validation exception: File C:\Users\coexistence.manager\AppData\Local\Temp\2\tmp_<folder\fileID>.format.ps1xml cannot be loaded because the execution of scripts is disabled on this system. Please see "get-help about_signing" for more details..

Executionpolicy on Powershell x86 version still set to restricted

Confirm that executionpolicy is set to unrestricted in PowerShell

1.      In Powershell run

get-executionpolicy

it should show something other than restricted preferably unrestricted

2.      Open up the Windows PowerShell (x86)

3.      Click  Start | All Programs | Accessories | Windows PowerShell | Windows PowerShell (x86)

4.     Type

get-executionpolicy

5.     If restricted then type

set-executionpolicy unrestricted

6.     Run the migration again