The blog of Windows Wally, a Windows Support Technician helping common people solve frustrating computer problems.

How To Fix Coredll.dll Errors

Reader Question:
“Hi Wally, How do I fix the Coredll.dll error, it appears when I try to start my computer.”
- Derek P., USA

Before addressing any computer issue, I always recommend scanning and repairing any underlying problems affecting your PC health and performance:

  • Step 1 : Download PC Repair & Optimizer Tool (WinThruster for Win 10, 8, 7, Vista, XP and 2000 – Microsoft Gold Certified).
  • Step 2 : Click “Start Scan” to find Windows registry issues that could be causing PC problems.
  • Step 3 : Click “Repair All” to fix all issues.

Setting up weekly (or daily) automatic scans will help prevent system problems and keep your PC running fast and trouble-free.

Wally’s Answer: There are several different ways that Coredll.dll errors can show up on your computer. Here are some of the more common ways that you might see Coredll.dll errors:

What does the Coredll.dll error look like?

  • “Coredll.dll Not Found”
  • “The file Coredll.dll is missing.”
  • “Cannot find [PATH]\Coredll.dll”
  • “Cannot start [APPLICATION]. A required component is missing: Coredll.dll. Please install [APPLICATION] again.”
  • “This application failed to start because Coredll.dll was not found. Re-installing the application may fix this problem.”

When does the Coredll.dll error appear?

Coredll.dll error messages appear when windows starts, shuts down, restarts, or when installing certain programs. It may even rarely appear during a Windows installation. It is important to note when and how it appeared.

Causes of Coredll.dll error

This error is caused by the removal or moving of the Coredll.dll file. This may have been caused by a virus, spyware, hardware failure, or due to some other reason.

How To Fix Coredll.dll Errors

Note: Start Windows in Safe Mode to complete any of the following steps if you’re unable to access Windows normally due to the Coredll.dll error.

  • Restore Coredll.dll from the Recycle Bin - if you’ve mistakenly deleted it.
  • Recover the file - If you are sure that you deleted it and emptied the Recycle Bin as well. Use a data restore utility. The recovery of your file depends on the amount of activity on the disk partition after deletion of the file.
  • Run a virus/malware scan - Install an anti-virus or an anti-malware such as WinThruster, and scan your whole computer.
  • Use System Restore - If you suspect that the Coredll.dll error was caused by a change made to an important file or configuration, a System Restore could solve the problem.
  • Re-install the program - Reinstall the application that is giving this error.
  • Update the drivers - If it is a hardware issue.
  • Roll back a driver - If updating a driver caused the problem.
  • Run the sfc /scannow System File Checker command - Do this to replace a missing or corrupt copy of the Coredll.dll file. If this DLL file is provided my Microsoft, the System File Checker tool should restore it.
  • Install Windows updates - Many service packs and other patches replace or update some of the hundreds of Microsoft distributed DLL files on your computer.
  • Repair Windows installation – Performing a startup repair or repair installation should restore all Windows DLL files to their working versions.
  • Registry Cleaner - Scan your computer with a registry cleaner utility such as WinThruster to repair Coredll.dll related issues present in the registry.
  • Perform a clean installation of Windows - If all else fails. This might still work. You should back-up your documents, bookmarks, videos etc before doing this.
  • Hardware Check - If the problem persists after a clean Windows installation, then Run a diagnostic check of your hard drive and memory. You may find a free diagnostic utility online. If a severe problem is discovered in the diagnostic test, replace the hard drive or memory as soon as possible.

Troubleshoot for a hardware problem if any Coredll.dll errors persist. After a clean install of Windows, your DLL problem can only be hardware related.

I Hope You Liked This Blog Article! If You Need Additional Support on This Issue Then Please Don’t Hesitate To Contact Me On Facebook.

Is Your PC Healthy?

I always recommend to my readers to regularly use a trusted registry cleaner and optimizer such as WinThruster or CCleaner. Many problems that you encounter can be attributed to a corrupt and bloated registry.

Happy Computing! :)

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About the Author

Windows Wally is a helpful guy. It’s just in his nature. It’s why he started a blog in the first place. He heard over and over how hard it was to find simple, plain-English solutions to Windows troubleshooting problems on the Internet. Enter: Windows Wally. Ask away, and he will answer.