1
Click your Start Button, type winver and hit Enter
Please provide a screenshot of the resulting dialog.
2
Open the Settings App
Go to Windows Updates
Please provide a screenshot of that window
I cannot install windows 11 update. Error code: (0xc1900101)
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(163.2, 30%, 25%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESD%3C/text%3E%3C/svg%3E)
Stephen Darling
5
Reputation points
I cannot install windows 11 update. Error code: (0xc1900101)
Windows for home | Windows 11 | Install and upgrade
3 answers
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DaveM121 848.5K Reputation points Independent Advisor2026-02-08T18:26:02.5133333+00:00 -
Stephen Darling 5 Reputation points
2026-02-08T19:16:37.2033333+00:00 Thank you, please see screen shots below.
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DaveM121 848.5K Reputation points Independent Advisor
2026-02-09T06:35:17.1966667+00:00 Sorry, I was offline, thank you for the screenshot.
Your screenshot indicates you have a 6 year old version of Windows 10 installed on your PC, if it is your intention to upgrade to Windows 11, you must first upgrade Windows 10 to version 22H2, and most normal methods to do that will fail, because your WIndows 10 version is so much out of date.
Try performing an in-place upgrade with the Windows 10 ISO.Please ensure you download the ISO in the same language as you use for the Windows UI, follow the steps, this is then not like re-installing Windows, it is just like an update and your personal files, settings and installed software will not be affected.
Click this link:
https://www.microsoft.com/software-download/windows10
to download the Media Creation Tool (Click on Download Tool Now), with that you can download the latest Windows 10 ISO (Select Create Installation Media for Another PC), then choose ISO, not USB
When the ISO file completes downloading
Disconnect from the Internet
Disconnect all external devices with the exception of a mouse or keyboard.
Temporarily disable any 3rd party Anti-virus you may have installed
Then, in Windows File Explorer, double click the ISO and then run Setup.exe and select the Install option.
Very Important - ensure you select the option to keep your files and apps.
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