vswebsite.interop.dll - Analyze and How to Fix Errors

★★★★☆ Verified File (27.08.2026)

⚠️ Important Notice: Here's a short and concise meta description for the term "vswebsite.interop.dll": "Information on vswebsite.interop.dll, including its purpose and usage in web development projects." This description is brief and provides a clear indication of the content related to `vswebsite.interop.dll`. 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	23.09.2005 11:07:53
File version	8.0.50727.42
Antivirus scan	✅ Clean	No viruses detected.
Digital signature	🟡 Not signed	Signature missing. The file may have been modified.
Hash Integrity	✅ MD5: Verified	File Hash protection is missing.

Hashes:

MD5: 4fb0672d5842ddb98898784461480e8b ✅
SHA-1: 6a927dd928c29ab1404b4d3c27a204880e0d12e6
SHA-256: b7a43778327d9052a0c55e33694c400d3ca7fa5bd40d6b0102918c120d2d5463
SHA-512: 54a1bd835eaf7785348531b84d5225997f6c4d475357d328d29001c2e4ecb584a7dc0bf0c55399e8e70cbe342dffc18d632d146398bd6231e612761c18f95e4c

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

What is vswebsite.interop.dll?

vswebsite.interop.dll is a legitimate Microsoft Dynamic Link Library (DLL) file. It functions as a primary interop assembly for Microsoft Visual Studio. It enables communication between Visual Studio's managed code and unmanaged COM interfaces. Developers use it specifically for web development functions and website project templates.

Standard File Location

You can typically find this file within the Visual Studio installation directory or the Global Assembly Cache (GAC). The standard file paths include:

C:\Program Files\Microsoft Visual Studio\<Version>\<Edition>\Common7\IDE\PublicAssemblies\
C:\Program Files (x86)\Microsoft Visual Studio\<Version>\<Edition>\Common7\IDE\PublicAssemblies\
C:\Windows\Microsoft.NET\assembly\GAC MSIL\VsWebSite.Interop\

How to Fix vswebsite.interop.dll Errors Without Downloading

Errors usually occur if the file becomes corrupted, unregistered, or misplaced during a Visual Studio update. You can resolve these issues safely without downloading third-party DLL files using these native methods:

1. Repair Visual Studio

The safest way to restore missing or broken core DLLs is through the official installer.

Close Visual Studio.
Open the Start Menu and type Visual Studio Installer.
Click More next to your installed version.
Select Repair and follow the prompts.
Restart your computer once finished.

2. Run a Repair via Windows Control Panel

If you use older versions of Visual Studio, use the standard Windows repair utility.

Press Windows Key + R, type appwiz.cpl, and hit Enter.
Locate Microsoft Visual Studio in the list.
Right-click it and select Change or Modify.
Click Repair inside the setup wizard.

3. Re-register the DLL File

If the file exists but Windows cannot read it, re-registering it via the Command Prompt can fix the link.

Type cmd in your Windows search bar.
Right-click Command Prompt and select Run as administrator.
Type the following command and press Enter: regsvr32 vswebsite.interop.dll
If it fails, navigate to the specific folder first using cd <path> (using the locations listed above) and run the command again.

4. Run System File Checker (SFC)

If the DLL error impacts broader system components, use the built-in Windows repair tool.

Open Command Prompt as an administrator.
Type sfc /scannow and press Enter.
Wait for the verification process to reach 100%.
Restart your system.

📊 Diagnostics Tool: Verify Your `vswebsite.interop.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:
mscoree.dll
└── VSWebSite.dll