How to Fix the coIEPlg.DLL is Missing Error?

Many of our readers complained about getting the coIEPlg.dll is missing error while launching some apps on their Windows computers. You might also see the DLL not found error if the system files are damaged or the DLL file is not registered or is deleted accidentally. The Coieplg.dll is a browser extension for Internet Explorer.

To get started, ensure there are no pending updates for Windows, check the Recycle Bin to make sure the DLL file is not accidentally deleted, and run a malware scan using a reliable antivirus tool.

How can I fix the coIEPlg.dll missing error?

1. Reinstall the affected app

1. Press Windows + I to open the Windows Settings app.
2. Navigate to Apps, then click Installed apps.
3. Locate the affected app from the list of apps, click the three-dot icon, and click Uninstall from the list of options.
4. Click Uninstall to confirm. 
5. Now, go to the app’s official website or Microsoft Store to reinstall the app.
6. Follow the on-screen instructions to complete.

2. Download a DLL fixer tool

If you have more than one PC running the same Windows version, copy the DLL file from this location: C:\Program Files\Common Files, and paste it into the affected computer at the exact location.

However, if you don’t feel comfortable following the steps or don’t have another device, we recommend using a third-party DLL fixer tool. All you need to do is download and install the tool, then run it to fix all DLL-related issues.

3. Re-register the DLL file

1. Press the Windows key, type cmd in the search box, and click Run as administrator from the list of options to launch Command Prompt with administrator rights.
2. Copy & paste the following command to re-register the coIEPlg.DLL and hit Enter: regsvr32 coIEPlg.DLL
3. Click OK when prompted and restart your PC to save the changes.

If you already have the coIEPlg.DLL file present on your computer, you can use this method to fix the missing DLL file issue.

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4. Run SFC & DISM scans

1. Press the Windows key, type cmd in the search box, and click Run as administrator to launch Command Prompt with elevated rights.   
2. To repair or recover the corrupted system files on your Windows PC, type the following command and press Enter: sfc /scannow
3. Wait for the command to complete successfully, then, to scan the Windows image for corruption and repair it using Windows Update, copy & paste the following command and hit Enter: Dism /Online /Cleanup-Image /RestoreHealth
4. Once the scan is executed, reboot your computer to let the changes take effect.

5. Restore your system to an older version

1. Press Windows + R to open the Run console.      
2. Type sysdm.cpl and click OK to open the System Properties window.
3. Go to the System Protection tab, and click the System Restore button.
4. Select Choose a different restore point on the System Restore window, then click Next to proceed.
5. Choose the restore point before you see the coIEPlg.dll missing error from the list of available restore points, and click Next.
6. Click Finish to start the process.

Windows will reboot and restore the system settings to the chosen point. If you see the System Restore is not working message after the system restarts, then we have a detailed guide for you.

6. Download the DLL file manually

NOTE

If you don’t want to use a DLL fixer and don’t have access to another computer, you can download and add the DLL file to your PC from a reliable third-party website like DLL-FILES, which has been tested and verified by WR experts.

1. Click the DLL-FILES website link to open the coIEPlg.dll page, then click Download.
2. Double-click the downloaded folder to open it, and copy the DLL file in it.
3. Navigate to this path and paste the DLL file after replacing C with the system drive letter:C:\Program Files\Common Files
4. Restart your computer to let the changes take effect.

To conclude, you can fix the coIEPlg.dll is missing error by repairing the system files, reinstalling the affected app, re-registering the DLL file if it is already present on your device, or using a DLL fixer tool.

Do you often see errors or pop-up messages related to missing DLL files? Then, don’t forget to read this guide to learn the reasons for preventing them.

If you are facing the same issue due to any other DLL file on your PC, check out the common ways to recover the DLL file quickly.

Before you go, check out our latest guide on what to do if Api-ms-win-crt-heap-11-1-0.dll is missing from your computer.

Did we miss a step that helped you fix this DLL missing error? If so, share the method in the comments section below, and we will add it to the list.