Powershell General

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#### Get AD Schema version 
Get-ADObject (Get-ADRootDSE).schemaNamingContext -Property objectVersion
#### Get groups with extension attribute
Get-ADGroup -Filter * -Properties extensionAttribute15 | select name,extensionAttribute15
#### Set Extension Attributes for array $i
foreach ($i in $groups) {Set-ADGroup $i -add @{extensionAttribute15="NoSync"}}
#### Remove extension attribute from group
Set-ADGroup "groupname" -clear "extensionAttribute15"
#### Autopilot
Save-Script -Name Get-WindowsAutoPilotInfo -Path c:\temp
Get-WindowsAutoPilotInfo.ps1 -OutputFile c:\temp\WindowsAutoPilotInfo.csv
#### Sharepoint
Install-Module -Name Microsoft.Online.SharePoint.PowerShell
$SPAdminSite = "https://contoso-admin.sharepoint.com"
Connect-SPOService -Url $SPAdminSite
#### Get All OneDrive Sites
Get-SPOSite -IncludePersonalSite $true -Limit all -Filter "Url -like '-my.sharepoint.com/personal/"
#### Remove Sharepoint / OneDrive Site
Remove-SPOSite -Identity https://contoso-my.sharepoint.com/personal/j_doe_contoso_com
#### Grant permissions to another users OneDrive
Set-SPOUser -Site https://contoso-my.sharepoint.com/personal/j_doe_contoso_com -LoginName firstname.surname@contoso.com -IsSiteCollectionAdmin $false
#### Exchange Powershell Module
Install-Module -Name ExchangeOnlineManagement 
#### Azure AD
Get-AzureADUser -all $true | where {$_.UserType -ne "Member" -and $_.UserState -ne "Accepted"}
#### Azure AD – Users group memberships
Get-AzureADUser -Filter "UserPrincipalName eq 'firstname.surname@contoso.com'" |Get-AzureADUserMembership
#### DNS Server copy secondary zones
Get-DnsServerZone -ComputerName DNS1 | Where {$_.ZoneType -eq "Secondary"} | Add-DnsServerSecondaryZone -ComputerName DNS2
#### Get a registry item
Get-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services\TSAppSrv\TSMSI"
#### Get Members of distribution list and enumerate sender permissions
$dist | select Name,RequireSenderAuthenticationEnabled,CustomAttribute7,@{Name='AcceptMessagesOnlyFromSendersOrMembers';Expression={$_.AcceptMessagesOnlyfromSendersOrMembers -join "/",","}} | Export-Csv c:\temp\Dist
#### Get users default auth method
Install-Module MSOnline
Connect-msolservice
(Get-MsolUser -UserPrincipalName firstname.surname@contoso.com).StrongAuthenticationMethods
#### Prefer IPv4
#Check if IPv4 IP address is preferred
ping $env:COMPUTERNAME
#If the reply is IPv6 address, run following registry setting to just prefer ipv4 and reboot
New-ItemProperty "HKLM:\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters\" -Name "DisabledComponents" -Value 0x20 -PropertyType "DWord"
#If DisabledComponents exists, use the set cmdlet
Set-ItemProperty "HKLM:\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters\" -Name "DisabledComponents" -Value 0x20
#You need to reboot the computer in order for the changes to take effect
Restart-Computer
# From <https://msunified.net/2016/05/25/how-to-set-ipv4-as-preferred-ip-on-windows-server-using-powershell/>