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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: 7e00bd6ca348aa4981188a1875dc52f4e1fc6004a112cd5c638ce79b70d98c18

SHA1: 495486509a1efedde9ae91630f761fa75deeecdb

MD5: 9fcffbb63ee655c4d95676ee7c23ed3b

Metadata

Integrity Check
Passed
Metadata
Complete
Company
Microsoft Corporation
Product
Microsoft® .NET
Description
System.IO.Compression.FileSystem
Build Note
System.IO.Compression.FileSystem
Copyright
© Microsoft Corporation. All rights reserved.
Architecture
x86 (32 bit)
Version
8.0.3026.36720
Product Version
8.0.30+a83db3e0eb2defb6220e15dae2f1a0462fdbf99f
Backwards Friendly
4.0 (Windows 95)

Security Scan

Last Validated
2026-08-20
First Upload
2026-08-18
Uncompressed Size
14.8KB
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.