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What is unrar.dll?

Part of RAR decompression library by Alexander Roshal

What is it?

RAR decompression library is a free software decompression library called "unrarlib", licensed under the GPL, based on an old version of unrar with permission from the author Eugene Roshal, but it can only decompress archives created by RAR versions up to 2.x. Archives created by RAR 2.9 and later (which are most RAR archives found today) use a different format which is not supported by the free library.
Description of unrar.dll from Alexander Roshal
The RAR compression utility is proprietary, with a closed algorithm. RAR is owned by Alexander L. Roshal is based on Lempel-Ziv (LZSS) and prediction by partial matching (PPM) compression.
Download Boost and enjoy your PC. Speed up RAR decompression library and optimize your PC.

How is unrar.dll loaded?

Process Module - unrar.dll is loaded as a DLL (dynamic link library) module within the process winzipdu.exe (WinZip Driver Updater by WinZip Computing, S.L. (WinZip Computing)) via run-time dynamic linking.
RAR decompression library is loaded by:

Community

What is the community is seeing?What is the community is doing?
About 0.1% of all Boost users have the unrar.dll file.Of the 0.1% of unrar.dll users, 34.0% have disabled it.
Typical file (disk image) location:
C:\Program Files\winzip driver updater\unrar.dll

Are there other versions of RAR decompression library?

Why are multiple of the same versions listed?

What else is related?

What Windows OS versions does this run on?

Windows 7 Ultimate (6.1.7600.0)
Windows 7 Ultimate (6.1.7601.65536)

About Alexander Roshal

WinRAR, by Alexander Roshal, is a very powerful file archiver & data compression utility ever developed. It is available as a shareware for almost every operati More...
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File details

File name: unrar.dll
Publisher: Alexander Roshal (verified)
Name: RAR decompression library
Description: RAR decompression library
Version: 3.80
Size: 78.5 KB
Original file name: Unrar.dll

Digital certificate

Issued to: WinZip Computing

Image hashes

MD5: 993f87a43f0d45a95fa107335b5c877c
SHA-1: e5184a7025d0daf4b8f8392d341d17da34e5f777
SHA-256: 6a1aa7bbf6e675d23ad8d300bec6bbae885e3d565be821f728b69504fd24b6f1

PE image details

Subsystem: Windows Console
File packed: No
Import Table
advapi32.dll
kernel32.dll
user32.dll
Export Table
rarclosearchive
rargetdllversion
raropenarchive
raropenarchiveex
rarprocessfile
rarprocessfilew
rarreadheader
rarreadheaderex
rarsetcallback
rarsetchangevolproc
rarsetpassword
rarsetprocessdataproc
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