'Install Powershell Module 'Microsoft.Xrm.Tooling.CrmConnector.PowerShell' throw an error

When I try to install module Microsoft.Xrm.Tooling.CrmConnector.PowerShell throw an error:

PackageManagement\Install-Package : The module 'Microsoft.Xrm.Tooling.CrmConnector.PowerShell' cannot be installed or updated because the authenticode signature of the file 'Microsoft.Xrm.Tooling.Crm 
Connector.PowerShell.psd1' is not valid.
At C:\Program Files\WindowsPowerShell\Modules\PowerShellGet\1.0.0.1\PSModule.psm1:1809 char:21
+ ...          $null = PackageManagement\Install-Package @PSBoundParameters
+                      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (Microsoft.Power....InstallPackage:InstallPackage) [Install-Package], Exception
    + FullyQualifiedErrorId : InvalidAuthenticodeSignature,ValidateAndGet-AuthenticodeSignature,Microsoft.PowerShell.PackageManagement.Cmdlets.InstallPackage

Anybody knows what should I do?



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