The Problem

You click Start (or press the Windows key) and nothing happens—or the menu opens for a second and vanishes. Search inside Start may be dead too. This is almost always the shell (explorer.exe) or a broken Start layout, not a full Windows reinstall.

Taskbar frozen but Start works? See taskbar not working or disappearing. Search works from the taskbar but not Start? Try fix Windows 11 search.

Quick Fixes (Try These First)

Restart Windows Explorer

Ctrl + Shift + Esc → Task Manager.
Processes → Windows Explorer → Restart.
Test Start and the Windows key again.

If Explorer is missing from the list: File → Run new task → type explorer.exe → OK.

Sign Out and Back In

Ctrl + Alt + Del → Sign out → sign in. Faster than a full reboot and clears a stuck shell session after sleep or an update.

Reboot Once (Seriously)

After a cumulative update, the shell often needs one clean boot. If it broke right after Patch Tuesday, also read fix Windows 11 after a bad update.

The Fix: Step-by-Step

Step 1: Run the Start Menu Troubleshooter

Settings → System → Troubleshoot → Other troubleshooters.
Run Search and Indexing if search inside Start is broken; run Program Compatibility Troubleshooter only if a third-party Start replacement was installed.
Apply fixes and reboot.

Step 2: Re-register Start and Shell Apps (PowerShell Admin)

Right-click Start → Terminal (Admin) or open PowerShell as Administrator.

Run:

Get-AppxPackage Microsoft.Windows.StartMenuExperienceHost | Reset-AppxPackage
Get-AppxPackage Microsoft.Windows.ShellExperienceHost | Reset-AppxPackage

Reboot.

If you get errors, run the broader reset (keeps your files):

Get-AppxPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}

Step 3: Check for Corrupt System Files

Terminal (Admin):

sfc /scannow
DISM /Online /Cleanup-Image /RestoreHealth

Reboot after repairs. Stuck updates can break the shell—fix Windows update stuck if patches never finish.

Step 4: New Local User (Tests a Broken Profile)

Settings → Accounts → Other users → Add account → local account.
Sign into the new user. If Start works there, your main profile is damaged—move files and use the new account, or reset the PC with keep your files.

Step 5: Last Resort — In-Place Repair

Download the Windows 11 ISO from Microsoft, mount it, run setup.exe, choose Keep personal files and apps. That rebuilds shell components without wiping data.

What Not to Do

Do not delete random registry keys from random blogs—broken StartMenuExperienceHost keys are hard to undo.
Uninstalling Microsoft.Windows.StartMenuExperienceHost from PowerShell leaves you with no Start at all.

After It Works

Pin only what you use; huge Start grids slow layout load. If Start breaks again after every sleep, update BIOS and GPU drivers, and disable fast startup (Control Panel → Power Options → Choose what power buttons do → uncheck Turn on fast startup).

How to Fix Windows 11 Start Menu Not Opening