How to Fix 0x80040154 Error – How to solve COM Exception Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))?
COM Exception Class not registered error occurs when a COM class is not properly installed or registered on the system.
📋 Table of Contents
The Class Not Registered error, also known as REGDB_E_CLASSNOTREG, occurs when the COM (Component Object Model) library you're trying to use is not properly registered on your system. This can happen for a variety of reasons, including:
🔍 Why This Happens
- [Cause]
🛠️ Step-by-Step Verified Fixes
Method 1: Registering the COM Component Manually
- Step 1: Open the Registry Editor on your system. This can be done by pressing the Windows key + R, typing `regedit`, and pressing Enter.
Method 2: Using the Microsoft Fix It Tool
- Step 1: Download and run the Microsoft Fix It tool from the official Microsoft website.
Method 3: Reinstalling the COM Component
- Step 1: Locate the installation files for the COM component you're trying to use.
Method 4: Using a Dependency Walker
- Step 1: Download and install the Dependency Walker tool from the official Dependency Walker website.
✨ Wrapping Up
By following these steps, you should be able to resolve the Class Not Registered error and successfully use your COM component.
❓ Frequently Asked Questions
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