This is common in Windows 10, 8.1, 7, Server 2012 and 2008
The following are some of the solutions for Windows Update Error Code 8024402c.
1. You need to have some Microsoft sites whitelisted or unblocked in your Windows Firewall.
2. One needs to make changes in the LAN Settings option of "Internet Options" (Win 10) > Connections in Internet Explorer.
3. Somtimes VPN (Virtual Private Network) can be the error.
4. Another cause is the ISA Server in the third-party Firewall settings.
5. Viruses, trojans, malware, adware can be another reason.
6. A simple solution in the form of "Update Troubleshooter" provided by Microsoft is available.
7. Proxy settings under "Internet Properties (Win 7)" > Connections can be another cause.
8. Windows Update components can be another cause.
9. UseWUServer option in the registry editor can be another cause.
10. Wrong update server can be another reason.
11. Windows update services accessing the internet can be another reason.
12. Settings of DNS errors under Network and Internet can be another reason.
13. SoftwareDistribution folder can be another reason.
As you can see above the number of reasons are many and the very common solution provided by many sites is only the registry check.
https://www.pallareviews.com/5203/fix-error-code-8024402c-windows-10-8-1-7-server-2012-2008/
