pcaui.exe
by Microsoft
Operating System
Summary
Windows Program Compatibility Assistant UI - displays compatibility prompts for older applications.
pcaui.exe is the 1250th most commonly executed Windows program in EchoTrail's dataset, observed 1,154 times across enterprise environments. It typically runs from C:\Windows\System32 and it is most often launched by svchost.exe.
1250th
most commonly executed Windows program
1,154
observed executions
low
statistical confidence
Behavior
Top Paths
- C:\Windows\System32100%
Top Hashes (SHA256)
- 4bd06c2ae7bde53eead339196cc8147b67db4f708ab6bc437efb530de26a5fde25.04%
- 296b9389f495b34b5d4244ab64c4d4625b67234818d1424128f94a4552adec0c22.88%
- f75ac3fa5d67ce788f1af41c63ef93d6081b4a97bd0eb4ae41dd97ade27c0b1919.41%
- 0085dc9cf82334fda419ee2cd374bc52e9e2a8794840018ce8a9611014d3132819.15%
- 3f96f3b23ceb6edc0242fdd29764e46497bf2bae3c636b155fab2d59828717f38.06%
- 19b6f5a424ec5c5d9b681bee57d1f9ead1ad953c36985023d7e82a234b48202f1.21%
- 8cb603d62bd9871e27a89cf19aec44fd4e0cfd2601942703a351a77c8d50e45e1.21%
- f4ef345d44fea3fbb13e4813a854a60d94683b6a907b27e85929e034171759cc1.21%
- 19bd080ecbfd5bfa158ca70ab1e3ac4702e0ee3a34e58280e62d500e3000deb60.78%
- 594ea6a7108c6d39b55c27a549059079c0d52c9cd5d37a5fb617baff56a5d53d0.35%
Process Ancestry
Top Grandparents
- services.exe68.13%
- runonce.exe24.3%
- explorer.exe5.98%
- svchost.exe1.2%
Top Parents
- svchost.exe77.93%
- hpservice.exe11.73%
- AccelerometerSt.exe5.39%
- SynTPEnhService.exe0.17%
- AGSService.exe0.09%
- armsvc.exe0.09%
- CCleaner64.exe0.09%
- ClipRenew.exe0.09%
- CxUtilSvc.exe0.09%
Top Children
- chrome.exe100%
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.