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smartscreen.exe

Windows ProcessMicrosoft Corporation

Catalog search terms smartscreen, windows smartscreen, windows defender smartscreen

WindowsSystem Component

Microsoft Defender SmartScreen. E dey check reputation of downloads and sites so dat unknown file wey just get new signature fit dey blocked before you run am.

Wetin you need know

Dis one dey check download reputation. MsMpEng.exe still dey scan di file bytes.

smartscreen.exe na SmartScreen. E dey ask Microsoft reputation services about file abi site. To block unsigned new tool na di feature. E no be Antimalware Service Executable.

E safe?
Check the running file path, signature, and publisher. Name alone no fit confirm say e safe.
Wetin make am block my installer?
Unknown reputation
Same as MsMpEng?
No
Feex tok say
If SmartScreen warn and di file na one tiny unknown exe from forum, I go treat di warning as wetin e suppose do. I no go disable SmartScreen just to save two seconds.

Wetin be smartscreen.exe?

smartscreen.exe na Microsoft Defender SmartScreen. E dey evaluate reputation for browsers, Store, and files wey you run from Explorer.

Wetin e dey do?

E fit delay di first launch while e dey check di hash. MsMpEng.exe fit still scan dat same file. Two layers, two processes.

Wetin make am dey run?

You download something, open Mark-of-the-Web file, abi Edge ask for reputation check. Resident copy dey normal for current Windows.

Inspect the running instance

Inside Windows PowerShell, this read-only query show matching process IDs, creation times and executable paths on this PC. (pcm)

Get-CimInstance -ClassName Win32_Process | Where-Object { $_.Name -eq 'smartscreen.exe' } | Select-Object ProcessId, ParentProcessId, CreationDate, Name, ExecutablePath | Format-List

No result or a path we no fit access is inconclusive. Protected processes fit restrict access, and process IDs fit be reused. Keep personal paths local. (pcm)

Use the file-identity guide to compare signatures and product metadata. A filename alone no fit establish safety. (pcm)

E dey safe?

Check dis running file

System32 and Microsoft na SmartScreen. smartscreen.exe inside "disable Windows" toolkit no be am.

Compare the recorded location with the actual file. A familiar folder alone no fit establish identity. (pcm)

C:\Windows\System32\smartscreen.exe

  • Expected publisher: Microsoft Corporation
  • Reputation, no be Defender file engine
  • Mark of the Web files dey trigger am

I fit end am?

Blocks go stop until e start again

To end SmartScreen dey skip reputation prompts until Windows start am. Dat one na security gap. Use Windows Security if you need permanent policy change.

I fit comot am?

No

No delete smartscreen.exe. App reputation na Windows Security setting, no be to delete am for Explorer.

E suppose start with Windows?

Windows dey start SmartScreen with di user session. E suppose remain available.

Measure resource use

Measure the current process rather than assume a universal baseline
CPU and memory Compare several observations for the same PID and workload. This entry get no independently measured universal baseline. (pcm)
Disk and network Attribute activity to the actual process and current task; a filename alone no fit establish expected destinations or transfer volume. (pcm)

File information

smartscreen.exe file information
Executable name smartscreen.exe
Recorded installation path C:\Windows\System32\smartscreen.exe
Publisher Microsoft Corporation
Signature check Inspect the actual file; this entry no dey certify its certificate identity. (pcm)

Common wahala dem

Unknown publisher every launch

Unblock di file properties if you trust di source, abi keep di warning. No off di feature globally for just one tool.

Offline PC

Reputation no fit look up. SmartScreen fit fail closed abi skip. Na network issue, no be broken exe.

How to troubleshoot

Diagnose before you change anything wey fit scatter things.

Read di exact SmartScreen page

More info > Run anyway na choice for only one file. Settings > App and browser control na di policy.

No use "disable SmartScreen" reg file from forum

Dem files na favorite malware dropper.

Technical details

Technical details
smartscreen.exe technical details
Image name smartscreen.exe
Role Defender SmartScreen

Check the identity of running file

A filename alone no fit establish safety. Verify the actual path, signature and product identity. (pcm)

Sources and verification

Recorded source label: August 2026. Dis label no establish independent verification. How we dey do research.

Dis article make sense to you?

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