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Libraries 213,105
Validated Hashes 1,838,869
Queued for Validation 20,303
Quarantined 2,356

System.IO.Compression.FileSystem.dll

SHA256: fe0f7dbdc68cc5668ffa8d20bac687fd9ea7bb113017218bbd6c1ef494f81037

SHA1: 20956bd1064ab643956a9a064f4e0c608de40016

MD5: 1d41042101552ff2fdc6eadda2a86ceb

Metadata

Integrity Check
Passed
Metadata
Complete
Company
Microsoft Corporation
Product
Microsoft® .NET Framework
Description
System.IO.Compression.FileSystem.dll
Build Note
System.IO.Compression.FileSystem.dll
Copyright
© Microsoft Corporation. All rights reserved.
Architecture
x86 (32 bit)
Version
4.8.3761.0
Product Version
4.8.3761.0
Backwards Friendly
4.0 (Windows 95)

Security Scan

Last Validated
2026-08-20
First Upload
2022-10-26
Uncompressed Size
23KB
Uploader Comment
N/A

Install Instructions

1

Download & Extract

Download the file, right-click the folder, and extract all files to your computer.

2

Install the .DLL

Move the extracted DLL file into the root folder of the software that is giving you the error (where its .exe file is located), or place it in the system directory below:

32-bit → C:\Windows\SysWOW64
64-bit → C:\Windows\System32
3

Restart the Program

Close and reopen the program or game so Windows can look for and load the new DLL file.