How to Fix RunDll Error on Startup [Step-by-step]

Are you facing a RunDll error at Startup? Below is a real user case from the Microsoft Community:

Do you know what this is, and how can you fix it? EaseUS will explain and simplify the RunDll error during Startup and provide a step-by-step guide to fix this common issue. Keep reading and learn about the underlying causes of the RunDLL error and detailed troubleshooting steps.

What Is RunDll Error?

A RunDll error on Startup manifests as a pop-up dialog box, indicating a failure to execute a Dynamic Link Library (DLL) file during the initialization of your Windows operating system.

What caused the RunDll Error at Startup?

These errors are often caused by corrupted or missing DLL files, causing a hiccup in the seamless startup process. When your system encounters a RunDll error, it signifies a struggle to locate and load the necessary DLL, hindering the execution of specific programs or processes.

To better understand and address this issue, exploring the root causes is crucial. Common triggers include malware infections, improper software installations, or system file corruption.

How to Fix RunDll Error on Startup - 5 Ways

Now, let's fix the RunDll error on Startup step-by-step. In this section, we'll guide you through four different methods to fix this issue. Below are some one-click buttons to help you share this guideline on your social media:

Way 1. Apply Boot Repair - Best

If you want to quickly solve the RunDll error during Startup without any effort, use the capabilities of EaseUS Partition Master Professional. This powerful tool goes beyond conventional solutions, offering a comprehensive approach to fixing startup issues. It specializes in addressing boot-related issues, making it a go-to solution for resolving RunDll errors during Startup.

Follow the steps:

Step 1. Start EaseUS Partition Master after connecting the external drive/USB to your computer, go to "Bootable Media," and click "Create bootable media."

Step 2. Select an available USB Drive or CD/DVD and click "Create." You can also burn the Windows ISO file to the storage media.

Step 3. Connect the created bootable drive to the new computer and reboot the computer by pressing and holding F2/Del to enter the BIOS. Then, set the WinPE bootable drive as the boot disk and press F10 to exit.

Step 4. Boot the computer again and enter the WinPE interface. Then, open EaseUS Partition Master and click "Boot Repair" under the "Toolkit" option.

Step 5: Select the system you want to repair and click "Repair."

Step 6. Wait a moment, and you will receive an alert that the system has been successfully repaired. Click "OK" to complete the boot repair process.

Other Key Functions of EaseUS Partition Master

Here are some applicable scenarios that related to the RunDll error at Startup:

• Fix your PC did not start correctly
• Repair hard drive won't boot problem
• Fix Windows 11 Startup Repair not working

Way 2. Scan the Hard Disk

EaseUS Partition Master can automatically scan your system disk to check and fix bad sectors, file system errors, and other disk errors efficiently. Download and follow the tutorial:

Step 1. Right-click the target partition that has a problem.

Step 2. Choose "Advanced" > "Check File System".

Step 3. Confirm if you want to hide the partition or not.

Step 4. In the Check File System window, check the "Try to fix errors if found" option.

Step 5. Click "Start" to check errors on your partition.

Way 3. Run Microsoft Autoruns

Microsoft Autoruns is a powerful utility designed to help users identify and manage programs that are configured to run automatically during system startup or user login. You can use download Autoruns to fix RunDll Error on Startup:

Step 1. Right-click autoruns64.exe and select "Run as Administrator" after unzipping it.

Step 2. Make sure that "Hide Empty Locations" is checked in Autoruns Options and that "Hide Windows Entries" and "Hide Microsoft Entries" are both unchecked.

Step 3. To apply the Quick Filter, type rundll.

Step 4. After clicking on each entry you've identified, the full file path should appear at the bottom of the Autoruns window.

Step 5. If RnbmrWebPEndrsrv.dll is mentioned in the path, right-click on the entry and remove it.

Way 4. Using Windows Startup Repair

As a corrupt shared DLL file could cause this issue, resolving RunDll errors on Startup can also be achieved through Windows startup repair. Follow the steps:

Step 1. Go to Windows Settings by pressing the "Windows+I" buttons simultaneously.

Step 2. Click "Update & Security" and "Recovery" from the left menu.

Step 3. Click "Restart now" under "Advanced startup."

Step 4. Your system will be prompted to a new Window for more options. Navigate to "Advanced options" and click "Startup Settings."

Step 5. Click "Enable Debugging" in the new list of settings.

Way 5. Manually Remove the RunDLL error on the Startup

You can also manually fix the RunDll error startup by navigating Registry Editor. Follow the steps:

Step 1. Launch the "Run" box using the "Windows+R" buttons simultaneously. Type regedit and press the "Enter" button to launch Registry Editor.

Step 2. In "Registry Editor," you need to find the file name shown in the RunDLL error. Simply use "Ctrl+F" to bring up the search feature, type that file name, and click the "Find Next" option. It can take some time to bring up the corresponding file, so wait a while.

Step 3. Right-click on that entry, click "Delete" to delete associated with the missing DLL file, and close Registry Editor.

Step 4. Again, open the Run dialog box, type taskschd.msc, and press "Enter" to launch Task Scheduler.

Step 5. Click Task Scheduler Library and find the central panel for entries corresponding to the file mentioned in the RunDLL error message. Disable any identified entries by right-clicking and selecting "Disable." After successfully disabling the process, close the Task Scheduler.

Step 6. Finally, restart your PC to see if these modifications solve the issue and if the RunDLL error is removed.

Way 6. Delete Temporary Files

The temporary files in Appdata may hinder the RunDLL from running correctly at startup. To address this issue, you can delete temporary files in Windows as follows:

Step 1. Press the Windows key + R to launch the Run dialog.

Step 2. In the Run dialog box, search C:\Users\*Your Username*\AppData\Local\Temp and press Enter.(Replace your username with the correct one.)

Step 3. Use the "Ctrl + A" keys to select all files, right-click, and choose "Delete."

Regarding Startup errors, you may like to read the following practical posts:

Conclusion

Navigating the complexity of the RunDll error on Startup is now straightforward work to fix it. This guide has disclosed the causes behind these disorders and provided step-by-step solutions.

For efficient and user-friendly resolution, consider EaseUS Partition Master. This tool not only fixes RunDll errors but also optimizes system performance through streamlined disk space management. Download EaseUS Partition Master for a hassle-free startup.

Whether opting for quick solutions or manual methods, you're now equipped to beat RunDll errors and ensure a stable and error-free initiation. Enjoy your computing experience by implementing the recommended solutions or exploring EaseUS Partition Master's capabilities.

FAQs About RunDll Error on Startup

If you have more questions or queries about the RunDll error, you may find the appropriate from these FAQs.

1. How do I fix Rundll on Windows 11?

While the specific methods can differ slightly between Windows versions, the core principles remain constant. Whether you're on Windows 11 or another version, consider these options:

• Utilize EaseUS Partition Master: This tool offers a one-stop solution for tackling Rundll errors. Its boot repair function can quickly diagnose and fix faulty startup configurations.
• Try Windows Startup Repair: Windows is equipped with a built-in repair tool. Access it through the Advanced Startup options and utilize its scanning capabilities to identify and potentially fix corrupt system files causing the error.
• Scan for malware: Run a full scan with a safe antivirus program to eliminate malicious software.

2. How do you fix the Rundll32 issue?

Windows' built-in SFC tool scans and repairs corrupted system files like rundll32. Follow the steps:

Step 1. Open Command Prompt as administrator.

Step 2. Input "sfc /scannow" and press Enter to initiate the scan.

3. How can I fix DLL errors in Windows 10?

Fix DLL errors on Windows 10 by following these steps:

Step 1. Open Command Prompt as administrator.

Step 2. Input "DISM.exe /Online /Cleanup-Image /RestoreHealth" and press Enter to run the Deployment Image Service and Management Tool.