Solving the 80040154 Error: Comprehensive Guide to Fixing This Common Failure

Error 80040154 is a common failure that occurs when there's an issue with the component object model (COM) registration. This error usually prevents applications from running correctly, and it can be caused by various factors such as incorrect registry entries, missing or corrupted files, and outdated software. In this guide, we'll walk you through the process of fixing the 80040154 error step-by-step.

Table of Contents:

• Step 1: Confirm the Error Code
• Step 2: Register the DLL Files
• Step 3: Run System File Checker
• Step 4: Update the Software
• Step 5: Perform a System Restore
• FAQs
• Related Links

Step 1: Confirm the Error Code

Before we begin fixing the error, it's essential to confirm that the error code is indeed 80040154. Check the error message displayed by the application to ensure that the error code matches the one we're addressing in this guide.

Step 2: Register the DLL Files

In many cases, the 80040154 error is caused by a missing or unregistered DLL file. To fix this, you'll need to register the required DLL files manually. Follow these steps:

1. Press Windows + R to open the Run dialog box.
2. Type cmd and press Ctrl + Shift + Enter to open the Command Prompt with administrative privileges.
3. In the Command Prompt, type the following command and press Enter:

regsvr32 <path_to_dll_file>

Replace <path_to_dll_file> with the actual path of the DLL file causing the error. For example, if the problematic DLL file is example.dll, you would type:

regsvr32 C:\example.dll

1. Once the registration process is complete, you should see a message saying that the DLL file was registered successfully. Close the Command Prompt and restart your computer to check if the error has been resolved.

Learn more about registering DLL files

Step 3: Run System File Checker

System File Checker (SFC) is a built-in Windows utility that scans your system for corrupted or missing files and attempts to repair them. Running SFC can potentially fix the 80040154 error if it's caused by corrupted system files. Follow these steps:

1. Press Windows + R to open the Run dialog box.
2. Type cmd and press Ctrl + Shift + Enter to open the Command Prompt with administrative privileges.
3. In the Command Prompt, type the following command and press Enter:

sfc /scannow

1. The SFC tool will start scanning your system for corrupted files. This process may take some time to complete. Once the scan is finished, the tool will attempt to repair any damaged files it has found.
2. Restart your computer and check if the error has been resolved.

Learn more about using System File Checker

Step 4: Update the Software

Outdated software can sometimes cause the 80040154 error. Ensure that your operating system and the application causing the error are both up-to-date. To update your software:

1. Press Windows + I to open the Settings app.
2. Click on Update & Security.
3. In the Windows Update tab, click on Check for updates. Windows will automatically download and install any available updates.
4. Restart your computer and check if the error has been resolved.

Learn more about updating Windows

Step 5: Perform a System Restore

If none of the previous steps have resolved the error, you can perform a system restore to return your system to a previous state when the error didn't occur. Note that this should be considered a last resort, as it may result in data loss.

1. Press Windows + R to open the Run dialog box.
2. Type rstrui.exe and press Enter to open the System Restore wizard.
3. Follow the on-screen instructions to choose a restore point before the error started occurring.
4. Confirm your selection and allow the system restore process to complete. Your computer will restart during the process.

Learn more about using System Restore

FAQs

What is the 80040154 error?

The 80040154 error is a common failure that occurs when there's an issue with the component object model (COM) registration. This error usually prevents applications from running correctly.

What causes the 80040154 error?

The 80040154 error can be caused by various factors such as incorrect registry entries, missing or corrupted files, and outdated software.

Can I fix the 80040154 error myself?

Yes, you can follow this comprehensive guide to fix the 80040154 error step-by-step.

How do I know if the error code is 80040154?

Check the error message displayed by the application to ensure that the error code matches the one we're addressing in this guide.

Will I lose any data while fixing the 80040154 error?

Most of the steps in this guide should not result in data loss. However, performing a system restore as a last resort may result in some data loss, so make sure to back up your important files before proceeding.

Related Links

• Microsoft Support: Fix Windows Update issues
• Microsoft Docs: Registering a DLL
• Microsoft Support: Use the System File Checker tool to repair missing or corrupted system files