6 Ways to Fix “StartUpCheckLibrary.dll missing” Error in Windows

Contents

What is “StartUpCheckLibrary.dll missing” Error?

What Are the Causes of this Error?

Methods to Fix the StartUpCheckLibrary.dll Errors:

Method 1: Fix Corrupted System Files and Check Disk

Method 2: Remove the File from Antivirus/Windows Defender Quarantine

Method 3: Delete the File from Task Scheduler

Method 4: Use AutoRuns to Remove StartUpCheckLibrary.dll Traces

Method 5: Remove the Traces of the File Using the Registry Editor

Solution 6: Do a Repair Install (not recommended)

Conclusion:

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Windows is known for its built-in troubleshooters, user-friendly interface, easy updates, and more. And that is the reason why most users love to use it. But despite the fact that Windows is one of the most loved operating systems, users also experience errors while using it and one of the reported issues is the “StartUpCheckLibrary.dll missing” error.

What is “StartUpCheckLibrary.dll missing” Error?

As you can see, the prompt says that the system is missing a file. This error usually appears when the users turn their computers on. Because of this error, Windows users start to experience several issues with their computers like crashes, errors, bugs, low performance, and inability to perform basic tasks (copying files, running programs, viewing photos).

In this guide, you will find 6 solutions that may help you fix StartUpCheckLibrary.dll missing in Windows.

What Are the Causes of this Error?

Well, most of the people who experienced this issue say that they experienced the error after updating Windows. Based on the past issues we can say that sometimes updating Windows can cause more harm than good because it causes files disappearance and other errors. 

And as stated above, the reason that users see the “StartUpCheckLibrary.dll is missing” error is that their computer lost some important files and the system directory cannot find the file during the update process. The problem can also appear after an attempted installation of an update failed or a so-called corrupted installation.

But you don’t have to worry if ever you’ll experience or you are experiencing this error because there are still solutions that you can try below. And if you want to avoid the hassle of trying the troubleshooting options, we advise you to use iolo System Mechanic. It can help you fix DLL files quickly and automatically.

Methods to Fix the StartUpCheckLibrary.dll Errors:

Method 1: Fix Corrupted System Files and Check Disk

Use Command Prompt commands to repair system file corruption:

• Launch Command Prompt as administrator.
• Paste sfc /scannow.

• And then start to Reboot your system.
• Use the following command lines if the SFC returned an error, and don’t forget to hit Enter after each command:
  DISM /Online /Cleanup-Image /CheckHealth
  DISM /Online /Cleanup-Image /ScanHealth
  DISM /Online /Cleanup-Image /RestoreHealth
• Double-check and make sure that your disk is okay. You can recheck by using the Administrative Command Prompt:
• Use the command below and press Enter if you are using an HDD as your main driver (where your operating system is installed – C: by default),:
  chkdsk c: /f
• If you are an SSD user, use this command:
  chkdsk c: /f /r /x
• Type in Y and press Enter if you receive an error.
• Check if it works by restarting your computer.

Method 2: Remove the File from Antivirus/Windows Defender Quarantine

• Hit the Windows key and type Windows Security.

• Launch the Virus & Threat Protection and click Threat History.
• Visit Quarantine Threats and see if StartUpCheckLibrary.dll is there.
• If you find it there, restore the StartUpCheckLibrary.dll file.

• You may need to add an exception for the file in Windows Defender settings so you can avoid future file problems.

Method 3: Delete the File from Task Scheduler

• Hit the Windows key and enter Task Scheduler.
• Click to expand the Task Scheduler Library and then go to Microsoft and expand Windows.

• Choose Application Experience and double-click the StartupCheckLibrary.
• Visit the Actions tab and click Start a Program.
• Then hit on the Edit button.
• Take away the StartupCheckLibrary.dll from the Argument box and hit on the OK button.

• Lastly, Reboot your PC.

Method 4: Use AutoRuns to Remove StartUpCheckLibrary.dll Traces

• Download the Microsoft Autoruns.
• Extract and open the downloaded zip file.

• Hover over Autoruns and right-click on it, then select Run as Administrator.
• Look for StartupCheckLibrary.
• Untick all the entries leading to the StartupCheckLibrary file.

• If there is no entry connected to StartupCheckLibrary, you can proceed on deleting all the entries where the file could not be found in the Image Path column.
• And then Restart your PC.

Method 5: Remove the Traces of the File Using the Registry Editor

• Hit on the Windows button and look for Registry Editor.
• Select Run as Administrator.
• Look for the following:

Computer\\HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Schedule\\TaskCache\\Tasks\\{391B74BA-C53C-4BDB-922C-B24E3ACFB09D}

• Then Right-click on {391B74BA-C53C-4BDB-922C-B24E3ACFB09D} and then choose Delete.
• You can also try to launch the edit menu from the Registry Editor and select Find.

• Look for startupchecklibrary and then eliminate the entry suspected to create the problem.
• Get out of Registry Editor and reboot your PC.

Solution 6: Do a Repair Install (not recommended)

• Visit the Microsoft site and download the Windows 10 ISO file.
• And then open the ISO file.
• Hover over the file setup.exe and double-click on it then start the repair, install from the mounted drive
• Once License Terms appear, read them and choose Accept.

• After that, let Windows 10 will now scan for updates and install the available ones.
• After that, start the installation process by clicking Install.
• When the installation is complete, you can proceed to follow the on-screen instructions

Conclusion:

Indeed, update errors are inevitable and sometimes can cause hassle but you don’t have to worry about it since we provided the methods to fix the issue above. We hope we were able to help you.

If you want to fix the StartUpCheckLibrary.dll error automatically, we recommend downloading and running iolo System Mechanic for an automatic fix.