How to Fix Windows Error 0x80016ba

A computer boots up and displays error 0x80016ba due to problem with the startup items in the Registry. Restoring the PC to an earlier date, stopping Windows Defender service, removing conflicting updates, and verification of DLL registry entries will sort out the issue.

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Alternative manual troubleshooting steps are given below:

Restore your System

Use the System Restore tool in Windows to restore back your PC to an earlier date.


For Windows 10/ 8.1/ 8/ 7/ Vista:

  1. Press Windows Key + R simultaneously.
  2. In the new dialog that appears, type “rstrui.exe”
  3. Click OK.
  4. In the new wizard that appears, choose a restore point and follow on-screen instructions.

Uninstall Conflicting Updates

Some recently installed updates are incompatible with your system. It is also possible that they are not completely installed. Uninstall them through Control Panel.


For Windows 10/ 8.1/ 8:

  1. Press Windows Key + X, select Programs and Features.
  2. Click “View installed updates” link.
  3. The page loads with the list of all Windows updates installed on your PC.
  4. In the Search Box located on upper right corner, type “KB958559”
  5. Right click the Windows Update KB958559, select Uninstall option.
  6. Follow the removal wizard and then restart your PC.

For Windows 7/ Vista:

  1. Click Start | Control Panel.
  2. Click Programs | View installed updates (Programs and Features).
  3. Remove the following update and then reboot:
  • Windows Update KB958559

Temporarily Stop Windows Defender

Use the Services tool in Windows to generate list of all services. Then terminate Windows Defender service and restart your machine.


For Windows 10/ 8.1/ 8/ 7/ Vista:

  1. Press Windows Key + R.
  2. Type “services.msc”, and click OK.
  3. This opens up a new window. Stop the following service:
  • Windows Defender Service

To stop a service, right click it and select Stop option from the context menu.

  1. Exit the window. Reboot.

Reregister DLL Files

Make sure your computer’s DLL registry entries aren’t corrupted. Reregister essential system DLLs given below. You will need to have administrative privileges in order to perform this task.

For Windows 10/ 8.1/ 8:

1. Press Windows Key + X, select Command Prompt (Admin).

2. Execute the following commands:


3. After successfully executing above commands, close and restart the PC.

For Windows 7/ Vista:

1. Click Start, type “Command Prompt”

2. Right click that and select Run as administrator.

3. Refer Steps # 2-3 under Windows 10/ 8.1/ 8 user’s section.

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