Windows 10: Failed to update windows from build 18363 to 19645 Extend Code 0x40021

When I tried to update the windows, during the installation I got the error code 0xC1900101 with Extend Code 0x40021 but I couldn't find the extend code in Microsoft doc. What is the meaning of extend code 0x40021?

:)

 

Version 10.0.18363 Build 18363 fails to download .application file that works for Build 18362

We have an setup application we have our customers use to install our software. The Setup application is a Visual Studio application built in 2013. All of a sudden, with the 18363 Windows build release the main "setup.exe" will download but when it tries
to run there is Windows error message saying it can't or won't download the "setup.application" file from the same folder. We have tested on several machines that have the 18362 build and the setup works fine. Is there a "bug" in build 18363 or is it a
"new feature" that blocks old code?

 

Windows Updates failed to instal

I just did step one and they have just all installed.... thank you so much.... it was quite frustrating having that update window pop up every 5 minutes and failing to instal every time

Thanks mate

 

Windows Build 18363

I have discovered that once upgraded to Windows 10 build 18363 from build 18362, domain users no longer have the option to use Photos. Local users still have the option but domain users do not. I have verified that this behavior is not the fault of a group
policy as down grading back to build 18362 fixes the issue. Does Microsoft have any time frame in fixing this issue?