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tapiui.dll

Microsoft Windows(TM) Telephony API UI DLL file version info

Library on Windows 2 known copies with hashes

Is it the real tapiui.dll?

file version info and known copies
Installed inC:\Windows\system32\
C:\Windows\SysWOW64\
Signed byMicrosoft Windows
ProductMicrosoft Windows Operating System, Microsoft Corporation
DescriptionMicrosoft Windows(TM) Telephony API UI DLL

2 known copies

10.0.19041.1 (WinBuild.160101.0800) · C:\Windows\SysWOW64\tapiui.dll · signed by Microsoft Windows

44a05af87399c3b1f010dd7b07add2f6fe5c31780c47fc96055ae48651213ecb

10.0.19041.1 (WinBuild.160101.0800) · C:\Windows\system32\tapiui.dll · signed by Microsoft Windows

5e755491cad6597181a059307cdedd6318ef74c4a8d6433b4950288aa5bc9fdc

From the file’s version info and the copies recorded by xCyclopedia (MIT). A copy in another folder, signed by someone else or with another hash is not necessarily malicious, but it is worth a closer look. In Ceplin, "<sha256>".whatis() says which known copy a hash is.