Error when you run Azure PowerShell cmdlets: Method invocation failed

This article discusses an issue in which you receive an error message "Method invocation failed because [System.Object[]] doesn't contain a method named 'RemoveAll'." when you run Azure PowerShell cmdlets.

Original product version:   Microsoft Entra ID, Cloud Services (Web roles/Worker roles)
Original KB number:   3072418

Symptoms

When you run Windows Azure PowerShell cmdlets, you receive an error message that resembles the following message:

Method invocation failed because [System.Object[]] doesn't contain a method named 'RemoveAll'.

Cause

This problem occurs for either of the following reasons:

  • You are using an outdated version of Azure PowerShell.
  • You are using a method name that does not exist.

Resolution

To resolve this problem, do either of the following:

Contact us for help

If you have questions or need help, create a support request, or ask Azure community support. You can also submit product feedback to Azure feedback community.