Remove OneDrive (PowerShell).ps1

# Source: https://superuser.com/a/1201549


function force-mkdir($path) {
if (!(Test-Path $path)) {
    #Write-Host "-- Creating full path to: " $path -ForegroundColor White -BackgroundColor DarkGreen
    New-Item -ItemType Directory -Force -Path $path
}}

  function Takeown-Registry($key) {
    # TODO does not work for all root keys yet
    switch ($key.split('\')[0]) {
        "HKEY_CLASSES_ROOT" {
            $reg = [Microsoft.Win32.Registry]::ClassesRoot
            $key = $key.substring(18)
        }
        "HKEY_CURRENT_USER" {
            $reg = [Microsoft.Win32.Registry]::CurrentUser
            $key = $key.substring(18)
        }
        "HKEY_LOCAL_MACHINE" {
            $reg = [Microsoft.Win32.Registry]::LocalMachine
            $key = $key.substring(19)
        }
    }

    # get administraor group
    $admins = New-Object System.Security.Principal.SecurityIdentifier("S-1-5-32-544")
    $admins = $admins.Translate([System.Security.Principal.NTAccount])

    # set owner
    $key = $reg.OpenSubKey($key, "ReadWriteSubTree", "TakeOwnership")
    $acl = $key.GetAccessControl()
    $acl.SetOwner($admins)
    $key.SetAccessControl($acl)

    # set FullControl
    $acl = $key.GetAccessControl()
    $rule = New-Object System.Security.AccessControl.RegistryAccessRule($admins, "FullControl", "Allow")
    $acl.SetAccessRule($rule)
    $key.SetAccessControl($acl)
}

function Takeown-File($path) {
    takeown.exe /A /F $path
    $acl = Get-Acl $path

    # get administraor group
    $admins = New-Object System.Security.Principal.SecurityIdentifier("S-1-5-32-544")
    $admins = $admins.Translate([System.Security.Principal.NTAccount])

    # add NT Authority\SYSTEM
    $rule = New-Object System.Security.AccessControl.FileSystemAccessRule($admins, "FullControl", "None", "None", "Allow")
    $acl.AddAccessRule($rule)

    Set-Acl -Path $path -AclObject $acl
}

function Takeown-Folder($path) {
    Takeown-File $path
    foreach ($item in Get-ChildItem $path) {
        if (Test-Path $item -PathType Container) {
            Takeown-Folder $item.FullName
        } else {
            Takeown-File $item.FullName
        }
    }
}

function Elevate-Privileges {
    param($Privilege)
    $Definition = @"
    using System;
    using System.Runtime.InteropServices;
    public class AdjPriv {
        [DllImport("advapi32.dll", ExactSpelling = true, SetLastError = true)]
            internal static extern bool AdjustTokenPrivileges(IntPtr htok, bool disall, ref TokPriv1Luid newst, int len, IntPtr prev, IntPtr rele);
        [DllImport("advapi32.dll", ExactSpelling = true, SetLastError = true)]
            internal static extern bool OpenProcessToken(IntPtr h, int acc, ref IntPtr phtok);
        [DllImport("advapi32.dll", SetLastError = true)]
            internal static extern bool LookupPrivilegeValue(string host, string name, ref long pluid);
        [StructLayout(LayoutKind.Sequential, Pack = 1)]
            internal struct TokPriv1Luid {
                public int Count;
                public long Luid;
                public int Attr;
            }
        internal const int SE_PRIVILEGE_ENABLED = 0x00000002;
        internal const int TOKEN_QUERY = 0x00000008;
        internal const int TOKEN_ADJUST_PRIVILEGES = 0x00000020;
        public static bool EnablePrivilege(long processHandle, string privilege) {
            bool retVal;
            TokPriv1Luid tp;
            IntPtr hproc = new IntPtr(processHandle);
            IntPtr htok = IntPtr.Zero;
            retVal = OpenProcessToken(hproc, TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, ref htok);
            tp.Count = 1;
            tp.Luid = 0;
            tp.Attr = SE_PRIVILEGE_ENABLED;
            retVal = LookupPrivilegeValue(null, privilege, ref tp.Luid);
            retVal = AdjustTokenPrivileges(htok, false, ref tp, 0, IntPtr.Zero, IntPtr.Zero);
            return retVal;
        }
    }
"@
    $ProcessHandle = (Get-Process -id $pid).Handle
    $type = Add-Type $definition -PassThru
    $type[0]::EnablePrivilege($processHandle, $Privilege)
}

	echo "73 OneDrive process and explorer"
	taskkill.exe /F /IM "OneDrive.exe"
	taskkill.exe /F /IM "explorer.exe"

	echo "Remove OneDrive"
	if (Test-Path "$env:systemroot\System32\OneDriveSetup.exe") {
		& "$env:systemroot\System32\OneDriveSetup.exe" /uninstall
	}
	if (Test-Path "$env:systemroot\SysWOW64\OneDriveSetup.exe") {
		& "$env:systemroot\SysWOW64\OneDriveSetup.exe" /uninstall
	}

	echo "Disable OneDrive via Group Policies"
	force-mkdir "HKLM:\SOFTWARE\Wow6432Node\Policies\Microsoft\Windows\OneDrive"
	sp "HKLM:\SOFTWARE\Wow6432Node\Policies\Microsoft\Windows\OneDrive" "DisableFileSyncNGSC" 1

	echo "Removing OneDrive leftovers trash"
	rm -Recurse -Force -ErrorAction SilentlyContinue "$env:localappdata\Microsoft\OneDrive"
	rm -Recurse -Force -ErrorAction SilentlyContinue "$env:programdata\Microsoft OneDrive"
	rm -Recurse -Force -ErrorAction SilentlyContinue "C:\OneDriveTemp"

	echo "Remove Onedrive from explorer sidebar"
	New-PSDrive -PSProvider "Registry" -Root "HKEY_CLASSES_ROOT" -Name "HKCR"
	mkdir -Force "HKCR:\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}"
	sp "HKCR:\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}" "System.IsPinnedToNameSpaceTree" 0
	mkdir -Force "HKCR:\Wow6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}"
	sp "HKCR:\Wow6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}" "System.IsPinnedToNameSpaceTree" 0
	Remove-PSDrive "HKCR"

	echo "Removing run option for new users"
	reg load "hku\Default" "C:\Users\Default\NTUSER.DAT"
	reg delete "HKEY_USERS\Default\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "OneDriveSetup" /f
	reg unload "hku\Default"

	echo "Removing startmenu junk entry"
	rm -Force -ErrorAction SilentlyContinue "$env:userprofile\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\OneDrive.lnk"

	echo "Restarting explorer..."
	start "explorer.exe"

	echo "Wait for EX reload.."
	sleep 15

	echo "Removing additional OneDrive leftovers"
	foreach ($item in (ls "$env:WinDir\WinSxS\*onedrive*")) {
		Takeown-Folder $item.FullName
		rm -Recurse -Force $item.FullName
	}