Windows specifications
| Edition |
Windows 10 Education |
| Version |
1909 |
| Installed on |
2019-06-25 |
| OS build |
18363.959 |
| Arch. Type |
x86_64 |
| Insider program |
No |
Device specifications
| Processor |
AMD Ryzen 5 1600X 6c/12t 3.6GHz |
| BIOS Mode |
UEFI |
| Motherboard |
Asrock AB350 Pro4 |
| RAM |
16 GB |
Issue
I downloaded the Feature Update 2004 and tried to installed it 3 times. Each time all went good without error, then it ask for restart, so I click the "Restart and Update", then it reboot (1st time) but before accessing the authentication
page it reboot again (2nd time) then again before accessing the authentication page it reboot again (3rd time) this time it's really longer (as if the update was finally applying), it goes to teh authentication page. I log in, then I check and the I'm still
at update 1909.
In the Windows update history I can see an error code: 0xc1900101. Nowhere else I can see an error.

The two first times I tried to update and it fails when I went in Windows Update and clicked "Check for updates" I saw the 2004 update available and was able to download and install it again. But since last try it now tells me I'm
up to date yet I'm still at update 1909 and 2004 failed to apply.
PS: I have Core Protection disabled.
PS2: Windows Update troubleshooter says all is fine.
Additional information
From systeminfo:
Hotfix(s): 23 Hotfix(s) Installed.
[01]: KB4565633
[02]: KB4497165
[03]: KB4498523
[04]: KB4503308
[05]: KB4506933
[06]: KB4508433
[07]: KB4509096
[08]: KB4515383
[09]: KB4516115
[10]: KB4517245
[11]: KB4520390
[12]: KB4521863
[13]: KB4524569
[14]: KB4525419
[15]: KB4528759
[16]: KB4537759
[17]: KB4538674
[18]: KB4541338
[19]: KB4552152
[20]: KB4560959
[21]: KB4561600
[22]: KB4565554
[23]: KB4565483