Fix: Qtcore4.dll is Missing Error on Windows 10

A dynamic link library system file is the qtcore4.dll that Windows will need to load system components. Otherwise, it is a shared system file required by some programs. In any case, if the DLL file is missing or corrupted, you will get an error message stating that this program couldn’t start because the qtcore4.dll file is missing from your computer.

How Do I Fix Qtcore4.dll is Missing Error?

To Fix Qtcore4.dll is Missing Error, follow this:

Method #1 Run A File Scan In Your System

  1. On the Windows 10 taskbar, press the Cortana button. 
  2. Then, in Cortana’s search box, enter cmd.
  3. Select Run as administrator by clicking right on the command prompt

copy and paste not working

  1. Press Enter by writing the following code in the Prompt. DISM.exe/Online/Cleanup-image/Restorehealth.cmd prompt (fix qtcore4.dll is missing error)
  2. Insert the code in the Command Prompt and press Return to initiate the system file scan. The scanning will take approximately half an hour. 
  3. If Windows Resource Protection repairs the corrupted system files, you can restart the windows. 

The System File Checker tool included in Windows 10 will thus repair the system files. To initiate a system file checker scan, follow the guidelines below if the above solution does not solve your issue of qtcore4.dll error.

Method #2  Qtcore4.dll is Missing Then Use Restoro

It is the best software specially developed to protect your PC from virus damage and let it run at optimum capacity. Along with fixing error messages, it also provides real-time anti-malware protection. You can recover the damaged files with this professional tool and also restore the registry settings to default values. With the wide variety of updated replacement files, your Windows 10 at any time can function great.


Restoro is a reliable third-party DLL fixer and uses a built-in automated system and the library to replace and repair any files that might be damaged or corrupted on your PC. To resolve your PC problems, you need to launch it, and follow the onscreen instructions, and the software’s automated process covers everything else. It is a tool that will scan your machine and then identify the actual fault. 

By using Restoro, the following steps should be followed to fix the registry errors –

  1. Install the Restoro.restoro installation
  2. The next step is to launch the software. 
  3. It will then scan your PC for any stability issues and possible malware. 
  4. Then press on Start Repair.restoro start scan (fix qtcore4.dll is missing error)
  5. For all the changes to take effect, you need to restart the PC. 

After completing all the processes, your PC will be as good as new. And then you don’t have to deal with the slow response times, qtcore4.dll error, or any other issues. 

Method #3 Qtcore4.dll is Missing Then Use Registry Scan

It is another way to solve the qtcore4.dll error. Follow the below steps to resolve the error message.

  1. In Windows 10, save CCleaner’s installer by pressing the Web page’s Download button.ccleaner download
  2. Open the installer to add the system optimizer.ccleaner installation (fix qtcore4.dll is missing error)
  3. Then directly open the CCleaner window in the snapshot. 
  4. To open the software’s registry cleaner, click on Registry.
  5. Select all the checkboxes of the Registry for a thorough scan. One of the more essential checkboxes to select is the CCleaner’s registry cleaner, including the Missing or Shared DLLs checkbox. 
  6. Then click on the Scan for Issues button to proceed further.rstui next
  7. To repair the listed entries, then you should click on the Fix Selected Issues button
  8. A dialog box will thus open up that will ask to back up the Registry. You must click on the Yes button, select a folder to save to, and then click on the Save button.

ccleaner backup (fix qtcore4.dll is missing error)

9. At last, press Next and then Finish to restore Windows to the restore point you have selected.

Method #4 Roll the Windows back to its restoring point

  1. By pressing on the Win key + X hotkey, open the main menu. 
  2. And then select Run on the Win + X menu. 
  3. Click the OK button by entering rstrui in Run.strui run
  4. Then on the System Restore window, press the Next button.rstui next
  5. Then you must select the listed restore point that predates the qtcore4.dll error message. 
  6. By restoring Windows 10, it will also remove the installed software. Press the Scan for affected programs button to open the window directly below and check the uninstalled software. 
  7. To restore Windows to the restore point that you have selected, press Next and Finish

System Restore can resolve the qtcore4.dll is missing on Windows 10 as the restoring Windows undoes modifications to system files. 

If the program returning the error message was running fine a few months back, you can roll Windows back to a restore point as follows.

Method #5 Qtcore4.dll is Missing then Check the Windows Updates

  1. Enter the keyword update in the search box by clicking the Cortana button. 
  2. To open Windows > Check for updates.update windows os
  3. On that window, click on the Check for updates
  4. Press the download button if the Windows 10 detects the available updates.check for updates (fix qtcore4.dll is missing error)5. As soon as you open it, the settings window might state there are available updates, and then you can press the Restart button.

When the error occurs, you should download the latest version of Windows 10 and solve the issue easier than you initially thought. 

See Also: Fix” Windows 10 Very Slow And Unresponsive” Problem

Method #6 Qtcore4.dll is Missing then Software Reinstall

  1. Press the OK button by entering appwiz.cpl in Run.appwiz 
  2. On the window, select the software that’s returning the missing qtcore4.dll error message. 
  3. Press the Change/Uninstall button
  4. Click Yes at least once to reinstall (fix qtcore4.dll is missing error)
  5. After uninstalling the software, you can restart the windows.restart windows
  6. Then you can reinstall the latest version of the software. Before reinstalling, Check whether it’s a freeware package and then download the setup wizard for the software again.

The qtcore4.dll error message will thus suggest that you reinstall the program. By reinstalling the fresh copy of the software that is returning the error message will therefore replace the program files.


Qtcore4.dll is a Dynamic Link Library that Windows will need to load system components. In this article above, you can find the answer to your question, “How Do I Fix Qtcore4.dll is Missing Error?”. Follow the steps properly, and you will solve your issue.

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