Windows Update Client Event Id 20499
Hi,
Thank you for being a part of Windows 10.
I know how this concerns you, let me help you to resolve this issue.
Try the following methods and check if it helps:
Method 1: Perform a Clean Boot and find out which application/service is causing this issue.
A clean boot helps to eliminate software conflicts and to determine what is causing the problem. Perform a clean boot on the computer by following the steps given in the link:
Note: The steps for Windows 8.1 applies to Windows 10.
Disclaimer: Please go through the section: How to reset the computer to start as usual after troubleshooting with clean boot of the Kb article to boot the computer in normal startup after fixing the issue.
If the issue persists then follow the below method.
Method 2:
I suggest you to disable third party security software (if any installed), and check.
Disable Antivirus:
NOTE: Antivirus software can help protect your computer against viruses and other security threats. In most cases, you shouldn't disable your antivirus software. If you have to temporarily disable it to install other software, you should re-enable it as soon as you're done. If you're connected to the Internet or a network while your antivirus software is disabled, your computer is vulnerable to attacks.
THIRD PARTY LINK DISCLAIMER
Disclaimer: Using Third Party Software, including hardware drivers can cause serious problems that may prevent your computer from booting properly. Microsoft cannot guarantee that any problems resulting from the use of Third Party Software can be solved. Using Third Party Software is at your own risk.
If the issue persists then follow the below method.
Method 3:
I suggest you to reset the Windows Update components. Refer the section manually reset Windows Update components in the below article to reset the windows update components.
Registry disclaimer:
Serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 (http://support.microsoft.com/kb/322756/) How to back up and restore the registry in Windows.
Kindly let us know if you need any further assistance with Windows. We are glad to assist you.
Thank you.
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