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Editorial Team
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Asked: 2026-06-12T15:01:31+00:00

Im getting the following error when trying to run hosted powershell scripts before upgrading

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Im getting the following error when trying to run hosted powershell scripts before upgrading from Windows 7 I never got this error.

The following error occurred while loading the extended type data
file: Microsoft.PowerShell.Core,
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\types.ps1xml(2977) : Error
in type “System.Security.AccessControl.ObjectSecurity”: Exception: The
getter method should be public, non void, static, and have one
parameter of type PSObject. Microsoft.PowerShell.Core,
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\types.ps1xml(2984) : Error
in type “System.Security.AccessControl.ObjectSecurity”: Exception: The
getter method should be public, non void, static, and have one
parameter of type PSObject. Microsoft.PowerShell.Core,
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\types.ps1xml(2991) : Error
in type “System.Security.AccessControl.ObjectSecurity”: Exception: The
getter method should be public, non void, static, and have one
parameter of type PSObject. Microsoft.PowerShell.Core,
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\types.ps1xml(2998) : Error
in type “System.Security.AccessControl.ObjectSecurity”: Exception: The
getter method should be public, non void, static, and have one
parameter of type PSObject. Microsoft.PowerShell.Core,
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\types.ps1xml(3005) : Error
in type “System.Security.AccessControl.ObjectSecurity”: Exception: The
getter method should be public, non void, static, and have one
parameter of type PSObject.

I have applied the following in App.config:

<dependentAssembly>
  <assemblyIdentity name="System.Management.Automation" publicKeyToken="31bf3856ad364e35" />
  <publisherPolicy apply="no" />
</dependentAssembly>

What could the issue be?

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1 Answer

  1. Editorial Team

    The solution is to do the following, rather than only adding a block for only System.Management.Automation as suggested by the posts I read, you need to add one for all referenced PS assemblies.

      <runtime>
      <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
        <dependentAssembly>
            <assemblyIdentity name="System.Management.Automation" publicKeyToken="31bf3856ad364e35" />
            <publisherPolicy apply="no" />
          </dependentAssembly>
        <dependentAssembly>
          <assemblyIdentity name="Microsoft.PowerShell.Commands.Utility" publicKeyToken="31bf3856ad364e35" />
          <publisherPolicy apply="no" />
        </dependentAssembly>
        <dependentAssembly>
          <assemblyIdentity name="Microsoft.PowerShell.ConsoleHost" publicKeyToken="31bf3856ad364e35" />
          <publisherPolicy apply="no" />
        </dependentAssembly>
        <dependentAssembly>
          <assemblyIdentity name="Microsoft.PowerShell.Commands.Management" publicKeyToken="31bf3856ad364e35" />
          <publisherPolicy apply="no" />
        </dependentAssembly>
        <dependentAssembly>
          <assemblyIdentity name="Microsoft.PowerShell.Security" publicKeyToken="31bf3856ad364e35" />
          <publisherPolicy apply="no" />
        </dependentAssembly>
        <dependentAssembly>
          <assemblyIdentity name="Microsoft.PowerShell.Commands.Diagnostics" publicKeyToken="31bf3856ad364e35" />
          <publisherPolicy apply="no" />
        </dependentAssembly>
        </assemblyBinding>
    </runtime>
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