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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: 736c20893d66721ec88f019e3dc68606778bca5ae6be3f5ee166f48036aebd3b

SHA1: 2ea4ecf51bd3550a62870e2dfbeaed9ab5eea4a5

MD5: 78bb6cdaad70ccaf7969c59a21a78b67

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
4.8.9032.0
Product Version
4.8.9032.0
Backwards Friendly
4.0 (Windows 95)

Security Scan

Last Validated
2026-08-28
First Upload
2022-10-25
Uncompressed Size
26.9KB
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.