mspfilt.dll - Analyze and How to Fix Errors

⚠️ Important Notice: dll fix tool | Resolve Microsoft Office compatibility issues quickly. Manually replacing system libraries can brick future Windows updates or cause critical system failures.

Architecture:	32-bit (x86)	Compatible with 32 and 64-bit Windows
Creation date	27.10.2006 04:56:46
File version	12.0.4518.1014
Antivirus scan	✅ Clean	No viruses detected.
Digital signature	✅ Have signed	File have signature, it is original file.
Hash Integrity	✅ MD5: Verified	File Hash protection is missing.
File size	0.7 Mb.	0.7 Mb. bytes.

Hashes:

MD5: 7a3e645219a7548d3e0a26cea5f4e2a0 ✅
SHA-1: b3100d5a37980112cc26bf466fd85ee8172f440f
SHA-256: 3a2ee2269364c2918b7ef67d15c8521589af16e971ec3ff78a7327c9e75477db
SHA-512: ccd9793f6d7e2df4e75f6ba7084a01173daf69ebef47898b8b3bb29ef78d02bfe9d21eed1f833a36313cf83361ddd1dcea25a73faa5d768e8ba867d385215c95

Digital file signature mspfilt.dll ✅

✅ This file is compatible with 32-bit Windows and can run on ✅ 64-bit Windows (via the WOW64 subsystem).

File Description: mspfilt.dll

mspfilt.dll is a legitimate Microsoft Dynamic Link Library (DLL) file known as the Microsoft Search Persistent Filter or Media Source Protocol Filter. It is a core component of the Windows operating system, primarily utilized by the Windows Search Service and Internet Information Services (IIS). Its main function is to index, filter, and process specific file content so that the system can quickly return search results.

Standard File Location

The authentic file is always located in the Windows system directories:

• 64-bit Windows (and 32-bit systems): C:\Windows\System32\mspfilt.dll
• 64-bit Windows (32-bit compatibility copy): C:\Windows\SysWOW64\mspfilt.dll

Note: If you find this file located outside of the Windows folder subdirectories, it could potentially be malware camouflaging itself under a legitimate name.

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How to Fix mspfilt.dll Errors Without Downloading

DLL errors usually occur because the file is corrupted, deleted by an overaggressive antivirus, or de-registered during a system update. Never download individual DLL files from third-party websites, as they often contain malware or outdated versions.

Use these built-in Windows utilities to repair the file safely:

1. Run the System File Checker (SFC)

The SFC tool scans all protected system files and automatically replaces corrupted or missing files with an official cached copy.

1. Press the Windows Key, type cmd, and right-click Command Prompt.
2. Select Run as administrator.
3. Type the following command and press Enter:

   sfc /scannow

4. Wait for the scan to reach 100%. Restart your computer.

2. Run the DISM Tool

If the SFC tool cannot find the cached replacement file, the Deployment Image Servicing and Management (DISM) tool will fetch a fresh copy directly from official Microsoft update servers.

1. Open Command Prompt as administrator (same as step 1 above).
2. Type the following command and press Enter:

   DISM /Online /Cleanup-Image /RestoreHealth

3. Allow the process to complete (it may appear stuck at times; this is normal).
4. Run sfc /scannow one more time after DISM finishes, then restart your PC.

3. Re-register the DLL File

If the file exists but Windows cannot read it, re-registering it in the Windows Registry can fix the connection.

1. Open Command Prompt as administrator.
2. Type the following command to unregister the file and press Enter:

   regsvr32 /u mspfilt.dll

3. Type the following command to re-register the file and press Enter:

   regsvr32 mspfilt.dll

4. Click OK on the pop-up confirmation dialog.

4. Restart the Windows Search Service

Because mspfilt.dll belongs to the search indexer, restarting the service can clear active memory glitches.

1. Press Win + R, type services.msc, and press Enter.
2. Scroll down to find Windows Search.
3. Right-click Windows Search and select Restart (or Start if it is stopped).

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📊 Diagnostics Tool: Verify Your mspfilt.dll File

Worried that the file on your PC has been modified by malware? Drop it into the form below. Our script will verify its file size, cryptographic hash (MD5/SHA-1), and check for a valid Microsoft digital signature.

Connected files:
KERNEL32.dll
├── USER32.dll
├── ADVAPI32.dll
├── IPROP.dll
├── ole32.dll
├── OLEAUT32.dll
├── MSVCR80.dll
├── MSVCP80.dll
├── GDI32.dll
├── msi.dll
├── MSIMG32.dll
└── SOFTWARE\\Microsoft\\Shared Tools\\ctras.dll

Microsoft Corporation