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csi.dll

Microsoft Office Document Cache file version info

Library on Windows 2 known copies with hashes

Is it the real csi.dll?

file version info and known copies
Installed inC:\Program Files (x86)\Microsoft Office\root\Office16\
C:\Program Files (x86)\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\
Signed byMicrosoft Corporation
ProductMicrosoft Office, Microsoft Corporation
DescriptionMicrosoft Office Document Cache

2 known copies

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

529307ec18b82f7fa6d86f0e246888a0d93378c6f6896e280a0354547a1b9c57

16.0.12527.20470 · C:\Program Files (x86)\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\Csi.dll · signed by Microsoft Corporation

914f70a50949e494ceae550d871dd982d2f04111c7464e64ab37e7e64f710308

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.