Windows Troubleshooting / Windows Settings
How to Fix Windows Search When It Is Not Working
Quick answer
Windows Search depends on an index, not a live scan of the whole disk every time you type. If results are empty or stuck, restart the PC, then rebuild the search index from Indexing Options. Let indexing finish on power (it can take hours on a large drive). Do not install a third-party "Windows Search fixer."
Quick diagnosis
If several of these match what you see, you are in the right guide.
- Start search returns no apps or files you know exist
- The search box spins forever
- Settings search works but Start search does not, or the reverse
- New files never appear in search
Possible causes
- The search index is corrupt or still building after a big update
- Windows Search service is stopped
- Indexing is excluded from the folder you care about
- A Group Policy or work profile limits search
- The disk is so full that indexing cannot keep up
What you need
- Settings
- Indexing Options (Windows optional feature UI)
What this problem usually means
Start search looks up a database Windows maintains in the background. If that database is incomplete, you get blank results even though File Explorer can still open the same folder. That is different from File Explorer freezing, where the window itself stops responding.
A Start menu that will not open at all is a different fault. Fix Start first if the search box never appears.
Search has two different jobs: finding apps and finding files. App results failing usually points to the Start/Search shell. File results failing usually points to indexing locations, a paused index, or a drive that Windows cannot scan reliably.
Before you start
- Plug a laptop in. Rebuilding the index is slower on battery.
- Note whether only files fail, or apps in Start fail too.
- Free some space on C: if the drive is packed, indexing needs room.
Quick fixes
1. Restart Windows Search from Task Manager
- Press Ctrl+Shift+Esc to open Task Manager.
- On Processes, look for SearchHost or Search.
- End that process, then try Start search again. Windows should restart it automatically.
- If the taskbar disappears after restarting Explorer, choose File → Run new task → explorer.exe.
If that sounds uncomfortable, restart the PC once. Do not end random Windows tasks just because Search is slow.
2. Run the Search and Indexing troubleshooter
Settings → System → Troubleshoot → Other troubleshooters → Search and Indexing. Apply what it offers. If it claims success and search is still empty, rebuild the index anyway.
Step-by-step troubleshooting
Decide whether apps or files are missing
- If Calculator or Settings does not appear by name, the Search shell or Start menu is the likely problem.
- If apps appear but yesterday's document does not, indexing locations are the likely problem.
- If File Explorer freezes while you browse the same folder, fix File Explorer freezing before rebuilding the index again.
Rebuild the index
- Press Win+R, type control.exe srchadmin.dll, press Enter (Indexing Options).
- Advanced → Rebuild. Confirm.
- Leave the PC awake. Status in Indexing Options should move from "Indexing paused" or a huge remaining count toward "Indexing complete."
Search may look worse during the rebuild. That is expected. Do not rebuild three times in a row hoping it goes faster.
Check which locations are indexed
In Indexing Options, Modify. Users folders are usually included. A drive you added yourself may not be. Include it only if you want those files in Start search; indexing an entire backup disk can keep the PC busy for a day.
Windows Search service
Win+R → services.msc → Windows Search. Startup type should be Automatic (or Automatic Delayed). If it is Disabled, a tweak or "optimizer" turned it off, set it back. Do not disable Search to "save RAM"; the cost is this exact problem.
Which Search layer is failing?
Choose an answer. The next question appears below, no account or download required.
Fix Start first. Search cannot be judged until the Start panel or search box is responding.
Restart SearchHost or reboot, then run the Search and Indexing troubleshooter. If apps still fail but Settings also will not open, use the Settings guide.
Check Indexing Options and included locations, then rebuild the index once. Give it time on power; repeated rebuilds slow the PC without adding coverage.
Restart SearchHost or reboot first. If Search remains blank, run the troubleshooter, then rebuild the index after confirming C: has enough free space.
How to know the problem is fixed
Start search finds Calculator by name and a document you saved today in Documents. If apps appear but files do not, wait for indexing to finish and confirm Documents is included.
If the problem continues
File Explorer's search box is a fallback while the index rebuilds. If even Explorer cannot list files in a folder, the problem is the disk or permissions, not Search, see file access or drive health.
When this may be hardware failure
Search failing alone is not a hardware diagnosis. Combine it with copy errors, SMART warnings, or vanishing files before you replace a drive.
Common mistakes to avoid
- Disabling Windows Search in Services to speed up the PC.
- Rebuilding the index every hour.
- Indexing the entire C:\Windows tree to "find everything", that slows the PC and still hides protected files.
Frequently asked questions
Why does indexing take so long?
The first rebuild after a feature update can read a lot of disk. Laptops pause indexing on battery. That is by design.
Does Classic File Explorer search use the same index?
Modern Start search does. Explorer can also fall back to a slower scan. Empty Start search with working Explorer usually means the index, not missing files.
Should I rebuild the index more than once?
No. Rebuild once, then let it finish. Rebuilding repeatedly starts the work over and can make the PC slower while solving nothing.
Written by Practical PC editorial team. We write practical Windows and PC troubleshooting guides for home users, students, and office workers. Guides are researched from official documentation and widely observed support patterns, then reviewed for safety and plain language. We do not invent lab tests, certifications, or first-hand repair experience we do not have.