SearchUI.exe

Windows ProcessMicrosoft Corporation

Also called searchui, cortana search ui

WindowsSystem Component

Older Windows Search / Cortana UI host. Windows 10 used this name widely. SearchApp.exe and SearchHost.exe are later hosts.

What you need to know

This is the Windows 10 SearchUI / Cortana host, not SearchIndexer.exe.

SearchUI.exe lived in the Cortana SystemApp. Current Windows 11 usually shows SearchHost.exe. Ending SearchUI.exe will not stop file indexing.

Safe?: Yes, as the older Search UI
Still on Windows 11?: Many PCs moved to SearchHost
Should I end it?: Search flyout closes

Feex says

If I am on Windows 10 and SearchUI is the hot name, I treat it as the flyout. I still leave WSearch running unless the catalog itself is the problem.

What is SearchUI.exe?

SearchUI.exe is the older Cortana / Search UI executable. Microsoft later split or renamed hosts to SearchApp.exe and SearchHost.exe.

What does it do?

It draws the Search pane on Windows 10-era builds. It does not crawl NTFS. SearchProtocolHost.exe and SearchFilterHost.exe do that work for the indexer.

Why is it running?

You opened Search on a build that still uses this package, or Foxhole saw a Windows 10 PC. Absence on Windows 11 is often expected.

Is it safe?

Usually safe

The Cortana or Search SystemApp binary is Microsoft. SearchUI.exe in a download pack is not.

A legitimate copy normally runs from:

C:\Windows\SystemApps\Microsoft.Windows.Cortana_*\SearchUI.exe

Windows 10-era host
Later: SearchApp.exe / SearchHost.exe
Indexer stays SearchIndexer.exe

Can I end it?

Closes that Search UI

Ending SearchUI.exe closes the pane. Indexing continues. The host may return on the next Search key.

Can I remove it?

Do not delete the Cortana package to "debloat" Search. Use Search settings. SearchHost.exe is the usual host on current Windows 11.

Should it start with Windows?

Search / Cortana starts it. Not a vendor Startup leftover.

Normal resource behavior

These are contextual labels, not universal averages.

CPU: Known hang on some Windows 10 builds
Network: Web and Cortana queries
Memory: Moderate
Disk: Low versus the indexer

File information

SearchUI.exe file information
Executable name	SearchUI.exe
Common legitimate path	C:\Windows\SystemApps\Microsoft.Windows.Cortana_*\SearchUI.exe
Publisher	Microsoft Corporation
Signature expectation	Signed by Microsoft Windows

Common problems

Classic Windows 10 SearchUI CPU bugs

Restart the host, then check for a cumulative update. Do not disable WSearch as the first step.

People look for SearchUI on Windows 11

SearchHost.exe is the usual current name.

Troubleshooting

Diagnose before you change anything destructive.

Compare the build: SearchUI versus SearchHost

Wrong article if the image name already changed.

Do not replace SearchUI from the web

System package.

Technical details

SearchUI.exe technical details
Image name	SearchUI.exe
Role	Windows 10 Search UI

Sources and verification

Reviewed by Feex editorial. Last verified August 2026 Status: Feex Reviewed. How we research.

Microsoft Support: Cortana and Search · Older Search UI
Microsoft Learn: Windows Search · UI versus indexer
Foxhole process map · First-party samples on Windows PCs. Not a lab benchmark.

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