I had the same issue so I would suggest you to re-install the windows 10. Updating using Windows 10 Assistant won't help in this case.
Failure to install Windows 10 April Update(version 1803)
I am unable to install The Windows 10 Feature update to OS version 1803(from version 1709) on my PC.
It is giving 0xc1900101 error. I have all the latest drivers on my PC. The current OS build of my PC is 16299.371.
After each failure, the update gets downloaded again and it has failed 5 times.
I would be grateful if someone could please help.
Windows for home | Windows 10 | Windows update
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178 answers
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Anonymous
2018-05-18T18:56:39+00:00 -
Anonymous
2018-05-18T18:58:16+00:00 I found a solution that worked for me.
First go to Microsoft Windows 10 Media Creation Tool and create the Windows 10 1803 version on a default formatted empty USB drive.
Then open the USB Drive with File Explorer and run Setup.exe. Select the option to install new version of windows. Then you can select to keep your applications and files or not.
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Anonymous
2018-05-19T01:37:54+00:00 media creation tool = update assistant i cant boot bcz i have imp files on my pc
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Anonymous
2018-05-19T01:39:32+00:00 i tried but wont solve
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Anonymous
2018-05-20T16:14:13+00:00 Sorry Microsoft you have blown it. This is not the first time I have had issues with Windows 10. I believe that with Windows 10 Microsoft decided , quiet arrogantly, that they no longer need to involve the owner of the PC in any updates. Result is that when they get it wrong the user is left trying to fix corrupted files and worse.
As an IBM Retiree I did not expect to have to go under the covers on a regular basis to keep my operating system going.
I see that 1803 is a feature update. Sorry Microsoft I dont want your features!
For interest here are some steps I took. None of which fixed the problem
Ran Wurest
Right clicked on BAT file then run as admistrator -failed
Reran Update
Still failed the Feature update ( others were OK)
Ran Scannow
Search box type cmd
Right click on the command prompt and run as administrator
Type the following and enter
SCF/SCANNOW
Ran but found errors it couldn't fix
Ran chkdsk as follows
Right Clicked on C drive in normal way
Select Properties
Tools tab
Press Check button
It fixed some errors in that area, but didn't fix the problem.
Bottom line. My windows 10 Machine is going in the cupboard and I am now running my Windows 7 machine as live.
Next Action: 1 None on the Windows 10 machine
2 Monitor this forum to see if Microsoft acknowledge the issue.