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Windows 11 Pro 23H2 cannot be upgraded to Windows 11 25H2.
The upgrade consistently fails with:
0xC1900101-0x40017
"The installation failed in the SECOND_BOOT phase with an error during BOOT operation."
The installation reaches approximately 75%, reboots, attempts to start the new version and then rolls back to Windows 11 23H2.
The same failure occurs:
Troubleshooting already performed:
Removed for testing:
The error remained unchanged.
Storage configuration:
Logs reviewed:
Notable findings:
Has anyone seen this exact upgrade failure or identified the root cause of 0xC1900101-0x40017 during SECOND_BOOT?Windows 11 Pro 23H2 cannot be upgraded to Windows 11 25H2.
The upgrade consistently fails with:
0xC1900101-0x40017
"The installation failed in the SECOND_BOOT phase with an error during BOOT operation."
The installation reaches approximately 75%, reboots, attempts to start the new version and then rolls back to Windows 11 23H2.
The same failure occurs:
Troubleshooting already performed:
Removed for testing:
The error remained unchanged.
Storage configuration:
Logs reviewed:
Notable findings:
Has anyone seen this exact upgrade failure or identified the root cause of 0xC1900101-0x40017 during SECOND_BOOT? <PII removed>
Winsock catalog appears clean and contains only standard Microsoft providers. Driver Store contains several third-party driver packages, including Creative Sound Blaster drivers (2020 and 2022), Realtek audio packages (2021 and 2026), Intel Bluetooth packages from multiple years, Logitech drivers, Honor phone drivers, and TAP-Windows Provider V9 (OpenVPN) driver package from 2019. Please advise which packages are relevant to investigate for 0xC1900101-0x40017 SECOND_BOOT rollback. drivers.txt
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Hello Mario Kermiet,
Sorry but the 2 attachments you sent cannot be found, can you please send them again?
I'm waiting for your reply.
Hello Mario Kermiet,
Thanks for replying.
It will take a while to check all of this. I'll see what I can find. I'll keep you updated.
Hello Mario Kermiet,
Welcome to Microsoft Q&A forum.
Before we proceed further, I'd like to do a few simple tests to better understand the situation.
I'm waiting for your reply.
Hello,
Great news – the upgrade to Windows 11 25H2 completed successfully and the system is now running version 25H2 without any issues.
Thank you very much for your patience and for taking the time to analyze the logs, review the FRST reports, and create the custom fixlist. After many failed upgrade attempts and days of troubleshooting, your fix finally resolved the problem.
I really appreciate the effort you put into investigating this issue and guiding me through the process. Your help was invaluable.
Thank you again for your excellent support.
Best regards,
Mario Kermiet
