DLL

defragproxy.dll

Download and install defragproxy.dll to fix missing or corrupted DLL errors.

(29 Files Available)
Last Updated
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Repository Analysis

Company
Microsoft Corporation
Product
Microsoft® Windows® Operating System
Description
Microsoft® Drive Optimizer Proxy Library
Architecture
x86-64 (64 bit) ARM64 x86 (32 bit)
Metadata Consensus
29/29 Files 100%
Higher percentages indicate stronger agreement across versions. Browse repository metadata to compare variant differences.

Frequently Asked Questions

What is defragproxy.dll?

Metadata analysis shows defragproxy.dll is a Dynamic Link Library (DLL) developed by Microsoft Corporation for Microsoft® Windows® Operating System and is described as “Microsoft® Drive Optimizer Proxy Library” .

DLL files (Dynamic Link Libraries) are shared core modules used by Windows programs to run efficiently without duplicating code. Most errors occur because the DLL is missing, corrupted, or outdated. In many cases, reinstalling the related application, repairing Windows, or replacing the DLL resolves the issue.

How do I fix missing DLL errors?
1

Software Fix

Fully uninstall and reinstall the program causing the error. If you are not sure what program is broken, look at the available file metadata above for hints. If a clean reinstall fails, download and install the DLL file manually.

2

Windows System Fix

Make sure Windows is fully updated. To repair system files automatically, right-click the Start menu, open PowerShell (Admin), and run these two commands in order:

Step A DISM /Online /Cleanup-Image /RestoreHealth
Step B sfc /scannow
How do I install DLL files?
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.

How do I register DLL files?

Most DLL files do not need registration. However, if your file is a COM component and requires explicit system registration, follow these steps:

1

Open Terminal

Right-click the Start menu and open PowerShell (Admin) or Command Prompt (Admin).

2

Run Command

Type the command below for your file type and press Enter. You can drag and drop the DLL file directly into the terminal window to fill its path automatically.

64-bit regsvr32 "C:\path\to\filename.dll"
32-bit C:\Windows\SysWOW64\regsvr32 "C:\path\to\filename.dll"

Latest Releases

defragproxy.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
Microsoft® Drive Optimizer Proxy Library
Version: 10.0.26100.8737 (WinBuild.160101.0800) Verified
Product Version: 10.0.26100.8737
Language: U.S. English (1033)
Uploaded: Jul 10, 2026   Size: 40KB
SHA256: 00d74282c66ce274e319b5c8256501088e653c44b3b439eca82c6437f8c90db2
SHA1: ce71a7867f93fbb42d828e741bc3d1a9c91b5cc4
MD5: 8195f92b496e693b9c6e1f837405d85c
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD
defragproxy.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
Microsoft® Drive Optimizer Proxy Library
Version: 10.0.26100.1 (WinBuild.160101.0800) Verified
Product Version: 10.0.26100.1
Language: U.S. English (1033)
Uploaded: Aug 4, 2024   Size: 40KB
SHA256: 88c7616932e2f8432224240765fd6a44afab926872d33806ce854e08d0a8dc4b
SHA1: 1bba1695395c183ae76964f94494b3c1a2c1e0eb
MD5: fd6efb71576ca53f397e84b801ecd114
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD
defragproxy.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
Microsoft® Drive Optimizer Proxy Library
Version: 10.0.26100.1 (WinBuild.160101.0800) Verified
Product Version: 10.0.26100.1
Language: U.S. English (1033)
Uploaded: Aug 4, 2024   Size: 22.5KB
SHA256: e369dc9dced44ff9e836a83930924c36e254ecbc9d4391c19b14aeb3280b3b2d
SHA1: 134ade805411b1331ba2f9dc5c612e176200ff3c
MD5: af380277b9a64daf3b48f330b8d71ee3
ARM 64 Bit
AArch64
DOWNLOAD
defragproxy.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
Microsoft® Drive Optimizer Proxy Library
Version: 10.0.19041.3636 (WinBuild.160101.0800) Verified
Product Version: 10.0.19041.3636
Language: U.S. English (1033)
Uploaded: Nov 22, 2023   Size: 20KB
SHA256: 0a86ef1fa34855ebdfa8fec96549a1141a3e44f739822cb20e8f5bbdf68f92c1
SHA1: 24d1ebb1df2a6120a0595610b55ae24e1eb43c42
MD5: 466bc43515832766f9b5c0cc9991f452
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD
defragproxy.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
Microsoft® Drive Optimizer Proxy Library
Version: 10.0.19041.3570 (WinBuild.160101.0800)
Product Version: 10.0.19041.3570
Language: U.S. English (1033)
Uploaded: Oct 12, 2023   Size: 20KB
SHA256: 4a06b7dc26bb0977160a2a23b0e21054a8746d3c72da4d94837eb14b1ec9f0b3
SHA1: 720f32ac8e1f16d64eb3fae51f1b53ac776fab2e
MD5: 2d7aa261f8a1fceaf5d2309e61609144
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD