SharePoint Online: Remove User from Group using PowerShell

Requirement: Remove User from Group in SharePoint Online using PowerShell

SharePoint Online: How to Remove a User from Group?
Removing users from SharePoint Online security groups can be done in just few clicks.  Follow these steps to delete users from a SharePoint Online group:

• Navigate to your SharePoint Online site where the group is used, Click on Site Settings gear >> Click on Site Settings from the menu.
• From the Site Settings page, Click on "People and groups" under Users And Permissions section.
• On the Left navigation menu, select the group from which you'd like to remove the users.
• Tick the check box next to the user(s) you want to remove.
• Click the Actions drop-down arrow >> Select Remove Users from Group.
• In the confirmation pop-up message box, Click OK to confirm the deletion.
  

If you don't see the Actions menu, it's because you don't have permissions to edit members of that Group!

SharePoint Online: Remove User from Group using PowerShell
Lets use PowerShell to delete users from a SharePoint online group.

#Load SharePoint CSOM Assemblies
Add-Type -Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.dll"
Add-Type -Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.Runtime.dll"

Function Remove-UserFromGroup()
{
  param
    (
        [Parameter(Mandatory=$true)] [string] $SiteURL,
        [Parameter(Mandatory=$true)] [string] $GroupName,
        [Parameter(Mandatory=$true)] [string] $UserID
    )
   Try {
        $Cred= Get-Credential
        $Credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($Cred.Username, $Cred.Password)

        #Setup the context
        $Ctx = New-Object Microsoft.SharePoint.Client.ClientContext($SiteURL)
        $Ctx.Credentials = $Credentials
        
        #Get the User
        $User=$Ctx.web.EnsureUser($UserID)
        $Ctx.Load($User)
        #Get the Group
        $Group=$Ctx.web.SiteGroups.GetByName($GroupName)
        $Ctx.Load($Group)
        $Ctx.ExecuteQuery()

        #Check if user member of the group
        $IsMember = $False
        $GroupUsers = $Group.Users 
        $Ctx.Load($GroupUsers)
        $Ctx.ExecuteQuery()
        Foreach($GrpUser in $GroupUsers){
            if($GrpUser.id -eq $User.Id)
            {
                $IsMember = $True
            }
        }
        if($IsMember -eq $False)
        {
            Write-host "User Doesn't Exists in the Group!" -ForegroundColor Yellow
        }
        else
        {
            #Remove user from the group
            $Group.Users.RemoveByLoginName($User.LoginName)
            $Ctx.ExecuteQuery()
            Write-host "User Removed from the Group Successfully!" -ForegroundColor Green
        }
    }
    Catch {
        write-host -f Red "Error Removing User from Group!" $_.Exception.Message
    }
} 

#Set parameter values
$SiteURL = "https://crescent.sharepoint.com"
$GroupName="Team Site Members"
$UserID="[email protected]"

#Call the function to remove user from group
Remove-UserFromGroup -SiteURL $SiteURL -GroupName $GroupName -UserID $UserID 

Remove All Users from Group in SharePoint Online using PowerShell
How about deleting all users from a group?

#Load SharePoint Online Assemblies
Add-Type -Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.dll"
Add-Type -Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.Runtime.dll"

#Function to remove all users from a group
Function Remove-AllUserFromGroup()
{
  param
    (
        [Parameter(Mandatory=$true)] [string] $SiteURL,
        [Parameter(Mandatory=$true)] [string] $GroupName
    )
   Try {
        $Cred= Get-Credential
        $Credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($Cred.Username, $Cred.Password)
 
        #Setup the context
        $Ctx = New-Object Microsoft.SharePoint.Client.ClientContext($SiteURL)
        $Ctx.Credentials = $Credentials
         
        #Get the Group
        $Group=$Ctx.web.SiteGroups.GetByName($GroupName)
        $Ctx.Load($Group)
        $Ctx.ExecuteQuery()
 
        #Get users of the group
        $GroupUsers = $Group.Users
        $Ctx.Load($GroupUsers)
        $Ctx.ExecuteQuery()
 
        #Remove all users from the group
        ForEach($User in $GroupUsers)
        {
            $Group.Users.RemoveByLoginName($User.LoginName)
        }
        $Ctx.ExecuteQuery()
        Write-host "All Users are Removed from the Group!" -ForegroundColor Green        
    }
    Catch {
        write-host -f Red "Error Removing All Users from Group!" $_.Exception.Message
    }
} 

#Set parameter values
$SiteURL = "https://crescent.sharepoint.com"
$GroupName="Team Site Members"

#Call the function to remove all users from group
Remove-AllUserFromGroup -SiteURL $SiteURL -GroupName $GroupName

Remove User from Group using SharePoint Online Management Shell
We can also use Remove-SPOUser cmdlet to remove a user from specific group.

#Set parameter values
$AdminSiteURL="https://crescent-admin.sharepoint.com"
$SiteURL="https://crescent.sharepoint.com"
$GroupName="Team Site Members"
$LoginName="[email protected]"

#Get Credentials to connect
$Credentials = Get-Credential
Connect-SPOService -url $AdminSiteURL -credential $Credential

#remove user from sharepoint online group powershell
Remove-SPOUser -LoginName $LoginName -Site $SiteURL -Group $GroupName

Remove User from All Groups in a site:
How about deleting a user from all groups of the site?

#Set parameter values
$AdminSiteURL="https://crescent-admin.sharepoint.com"
$SiteURL="https://crescent.sharepoint.com"
$GroupName="Team Site Members"
$LoginName="[email protected]"

#Get Credentials to connect
$Credentials = Get-Credential
Connect-SPOService -url $AdminSiteURL -credential $Credential

#Get all groups  
$Groups= Get-SPOSiteGroup -Site $SiteURL

#Remove user from each group 
Foreach($Group in $Groups)
{
   Remove-SPOUser -Site $SiteURL -LoginName $LoginName -Group $Group.Name
}

SharePoint Online: Remove user from group using PnP PowerShell
Let's remove a user from SharePoint Online group with PnP PowerShell:

#Config Variables
$SiteURL = "https://crescenttech.sharepoint.com/sites/marketing"
$GroupName ="Marketing Members"
$UserLoginId = "[email protected]"

#Get Credentials to connect
$Cred = Get-Credential

#Connect to PNP Online
Connect-PnPOnline -Url $SiteURL -Credentials $Cred
    
#Remove user from group
Remove-PnPUserFromGroup -LoginName $UserLoginId -Identity $GroupName