Windows 8.1 is the first version of the system that can be updated directly and freely in the history of Microsoft. However, this should be a very simple update, but it has suffered a lot of problems. A large number of users reported that the update could not be completed. Even if the upgrade succeeded, it encountered such an error. Not to mention that Windows RT 8.1 was directly retracted.
In various forums on the Internet, a large number of Chinese and foreign users have been affected by "0xC1900101-0x40017" errors, prompts “Sorry, we can not update to Windows 8.1, we have restored this computer to the previous version of Windows . & rdquo; Although no one can understand what this line of code means.
From the feedback of the users, the error experience is basically the same, all of them are suddenly blue screen when the desktop settings are applied during the update process, then the installation is resumed, then the report fails, and then restored to Windows 8, and then the error code prompt.
According to experience, this can almost be determined to conflict with the user's system settings, somewhere in the software driver, but because there are too many users involved, the computer configuration is not the same, it is an impossible task to find the specific root cause.
Microsoft has finally responded a bit. A support engineer explained that the above problem was caused by a driver bug check during the second reboot, and it is recommended that the user check all installed updates.
not update to Windows 8.1
0xc1900101-0x40017
may be caused by the following reasons:
1. antivirus software
2.
drive solutions in question :
1. First, please confirm whether your model supports upgrade to Windows 8.1;
Support Win8.1 hardware requirements
Windows 8.1 can run well on the same hardware that supports Windows 8:
· Processor: 1 GHz or faster
· Memory: 1 GB (32 bit) or 2 GB (64 bit)
· Available hard disk space: 16 GB (32 bit) or 20 GB ( 64-bit)
· Graphics Card: Microsoft DirectX 9 Graphics Device with WDDM Driver
Warning
· In order to use Windows 8.1, you must log in to your computer with a Microsoft account. The option to create a local account will be available in the final release of Windows 8.1.
To use certain features, you need to meet the following additional requirements
· For Windows 8.1 64-bit installations, your CPU must also support CMPXCHG16b, PrefetchW, and LAHF/SAHF.
· To use touch, you need a multi-touch tablet or monitor.
· To access the Windows Store and download and run apps, you need a valid Internet connection, at least 1024 x 768 screen resolution, and a Microsoft account.
· Internet access (may generate ISP fees).
2. It is recommended that you back up important personal files and use the one-click recovery function to restore the computer to the factory state.
When your computer is pre-installed with Lenovo Genuine Windows 8 system, it has been upgraded to Windows 8.1. This document will take you step by step to restore to Windows 8 by one-click recovery. 3. Uninstall software and drivers that may affect the update, such as anti-virus software, power management, graphics driver, etc.;
4. Installation Update all Windows update patches before attempting to update Windows 8.1 in the app store.