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ONBttnOL.dll

Microsoft OneNote Outlook Add-in file version info

Library on Windows 1 known copy with hashes

Is it the real ONBttnOL.dll?

file version info and known copies
Installed inC:\Program Files (x86)\Microsoft Office\root\Office16\
Signed byMicrosoft Corporation
ProductMicrosoft OneNote, Microsoft Corporation
DescriptionMicrosoft OneNote Outlook Add-in

1 known copy

16.0.12527.20470 · C:\Program Files (x86)\Microsoft Office\root\Office16\ONBttnOL.dll · signed by Microsoft Corporation

f52203b27cdb52ca501f3daef244a4ab11ee2440a660526157cc35fe563ce8b2

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.