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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: 0b3abd13ef459203c38e7044b04504ef8adf1fc81a9b2124b66c64ed346110ee

SHA1: 248f3c2d5a20ae9bb1ab054f5846ea973779fd3f

MD5: 5f6fd6c9cb459bf16895b4b075127295

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
9.0.1326.6317
Product Version
9.0.13+9ecbfd4f3f330dc9649bce49cb12570b19d48c87
Backwards Friendly
4.0 (Windows 95)

Security Scan

Last Validated
2026-07-05
First Upload
2026-07-05
Uncompressed Size
15.3KB
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.