prevhost.exe
by Microsoft
Operating System
Summary
Windows Preview Handler Surrogate Host - hosts file preview handlers for File Explorer preview pane.
prevhost.exe is the 549th most commonly executed Windows program in EchoTrail's dataset, observed 9,468 times across enterprise environments. It typically runs from C:\Windows\System32 and it is most often launched by svchost.exe.
549th
most commonly executed Windows program
9,468
observed executions
low
statistical confidence
Behavior
Top Paths
- C:\Windows\System3250.56%
- C:\Windows\SysWOW6449.44%
Top Hashes (SHA256)
- 82e8c5b947c25eba8238be0b803f35a2d61a37be81b8380b3cc756d4d1c2335820.69%
- 9ab198ea2629d406170c16cf4fd97e1f44d5a3c1237946afee314298e768600913.6%
- 0b853446d43161cefa1c901c9c2eba60ba5ac12cc63b0064230a25bd711c7c8611.61%
- c24a7ea93c8788369a22fff0dffe26133ff8b937e7a60732ab40b79363f0fdc111.2%
- ca345b9bfc51923f6a505ddb4f13583c63967682bc1c349e817dcf9f23d5b2969.15%
- 32863169da356243fd74440ab2ce0de7eacf2a5760027602dab5159c464621d48.87%
- e07240527aa53e46519e2febb4321df9e99daf77812066d363dad619b9488c4c5.26%
- a5e77d6c2d343da645acc660d45b15acaafefbd091a2f18a0c5137655d8480263.98%
- 09518d012f6ebfac98753f33e31d3f0e504c8dbe271302fa6074f601f47b03112.94%
- 6d1f3a5ec1309b7b670ce9f0edec44c3f2373708acfc9c75cd2557bf62cb41fd2.75%
Process Ancestry
Top Grandparents
- services.exe100%
Top Parents
- svchost.exe99.96%
- OUTLOOK.EXE0.04%
Top Children
- AcroRd32.exe74.65%
- msedgewebview2.exe20.15%
- Acrobat.exe4.78%
- WerFault.exe0.13%
- chrome.exe0.06%
- firefox.exe0.01%
Rare or environment-specific process names are omitted from ancestry tables. Percentages are of all observed relationships.
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Data from EchoTrail's dataset of ~346M Windows process executions. Last extracted 2026-08-04.