"Cannot update to Windows 8.1" solution

Windows 8.1 is the first version of the system that can be directly updated free of charge in Microsoft history, but this should be a very simple update, but it has encountered many problems, a large number of users can not report After the update is completed, even if the upgrade is successful, I encountered such an error, not to mention that Windows RT 8.1 was directly retracted.

In a variety of 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, they are all blue screen when applying the desktop settings during the update process, then the installation is resumed, then the report fails, and then restored to Windows 8, 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 impossible to find the specific root cause. Task.

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.

Unable to update to Windows 8.1

0xc1900101-0x40017

can be caused by the following reasons:

1. Antivirus software

2. Problematic driver

Solution:

1. First, please confirm whether your model supports upgrading to Windows 8.1;

Support Win8.1 hardware requirements< Br>

Windows 8.1 works great 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: with WDDM driver Microsoft DirectX 9 Graphics Device

Warning

· In order to use Windows 8.1, you must be logged in to your computer using 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 is now Upgrade to Windows 8.1. This document will take you step-by-step through one-click recovery to Windows 8

3. Uninstall software and drivers that may affect updates, such as anti-virus software, power management, graphics drivers, etc.;

4. Install all Windows update update patches before attempting to update Windows 8.1 in the store.