Powershell錯誤Add-PSSnapin“ Microsoft.SharePoint.PowerShell”

Question

當我使用管理員權限從sharepoint 2010管理shell運行以下命令時，出現錯誤。

Add-PSSnapin Microsoft.Sharepoint.Powershell

Add-PSSnapin : Cannot add Windows PowerShell snap-in Microsoft.Sharepoint.Power
shell because it is already added. Verify the name of the snap-in and try again

Answer 1

檢查模塊是否已經加載：

if (Get-Module -ListAvailable -Name SomeModule) {
  Write-Host "Module exists"
} else {
  Write-Host "Module does not exist"
}

來源： 如何檢查是否安裝了Powershell模塊？

更新：

Try { 
    if((Get-PSSnapin -Name Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue) -eq $null){ 
        Add-PsSnapin Microsoft.SharePoint.PowerShell 
    } 
}Catch{

}