reset-documents.md

reset-documents.ps1

Repair damaged Documents and Desktop folder locations.

Run this as your normal user, in Windows PowerShell

reset-documents.ps1

Add-Type @"
    using System;
    using System.Runtime.InteropServices;

    public class KNOWNFOLDERPATH  {

        /** https://docs.microsoft.com/en-us/windows/win32/api/shlobj_core/nf-shlobj_core-shgetknownfolderpath */
        [DllImport("shell32.dll")]
        private static extern int SHGetKnownFolderPath(
            [MarshalAs(UnmanagedType.LPStruct)]
            Guid       rfid,
            uint       dwFlags,
            IntPtr     hToken,
            out IntPtr pszPath
        );

        public static string ManagedSHGetKnownFolderPath(Guid rfid) {
            IntPtr pszPath;
            int hresult = SHGetKnownFolderPath(rfid, 0, IntPtr.Zero, out pszPath);
            if (hresult != 0) {
                // https://docs.microsoft.com/en-us/dotnet/api/system.runtime.interopservices.externalexception
                throw new ExternalException("-", hresult);
            }
            string path = Marshal.PtrToStringUni(pszPath);
            // https://docs.microsoft.com/en-us/dotnet/api/system.runtime.interopservices.marshal.freecotaskmem
            Marshal.FreeCoTaskMem(pszPath);
            return path;
        }

        /** https://docs.microsoft.com/en-us/windows/win32/api/shlobj_core/nf-shlobj_core-shsetknownfolderpath */
        [DllImport("shell32.dll")]
        public extern static int SHSetKnownFolderPath(
            ref Guid folderId,
            uint flags,
            IntPtr token,
            [MarshalAs(UnmanagedType.LPWStr)] string path
        );
    }
"@


"%USERPROFILE%: $($env:USERPROFILE)"

# https://docs.microsoft.com/en-us/windows/win32/shell/knownfolderid
$KNOWNFOLDERIDs = @(
    @{
        KNOWNFOLDERID = 'FOLDERID_Desktop'
        GUID = 'B4BFCC3A-DB2C-424C-B029-7FE99A87C641'
        DefaultPath	= "$($env:USERPROFILE)\Desktop"
    }
    , @{
        KNOWNFOLDERID = 'FOLDERID_Documents'
        GUID = 'FDD39AD0-238F-46AF-ADB4-6C85480369C7'
        DefaultPath = "$($env:USERPROFILE)\Documents"
    }
)

$KNOWNFOLDERIDs | ForEach-Object -Process {
    $_
    [KNOWNFOLDERPATH]::ManagedSHGetKnownFolderPath($_.GUID)
    [KNOWNFOLDERPATH]::SHSetKnownFolderPath([ref]$_.GUID, 0, 0, $_.DefaultPath)
}