win10 Update 2004 Error 0xa0000400?

You are the 10th anniversary update of Windows.

First of all, did you run Skype? Many people have this error because they have opened Skype (including the background), close Skype and end the Skype-related processes in Task Manager, and try again.

If it doesn't work, then you can use the troubleshooter to find the problem, press the win key and the i key together - > pop up the windows settings - > update & security - > troubleshoot - > find windows update under "start and run" - > click on windows update, and then click on the "run troubleshooter" that appears - it will automatically find the problem and fix it - > try to upgrade after repairing.

If it doesn't work, then you can try this method: during the upgrade process, when the verification stage is completed, whether it is wireless or wired, it is directly disabled, that is, the network is disconnected, and then the error will not be reported and the upgrade will continue. . .

In the end, if it can't be solved, you can choose not to upgrade, which actually has no impact on ordinary users.

Hello, here's how to deal with it:

**Windows 10 2004 complete installation ISO, do not need to make a boot disk, directly under the current system with the decompression software unpackaged, run it, upgrade and install.

0xc1900101-0x20017, 0xc1900101-40017, 0xc1900101-30018, 0xc1900101-30019, 0xc1900101-4000D, etc. This kind of problem is most likely due to some software or drivers installed by the user blocking the installation process, resulting in the upgrade failure.

If this happens, you can go directly to Microsoft's official website to upgrade.

The details are as follows:

Solve common problems with your computer.

1. The hard disk controller cannot be automatically recognized.

Using non-genuine individual operating system discs, while installing the system, is prone to this error. The reason is that the hard disk controller driver that is automatically loaded by the non-genuine disc does not meet the needs of the computer itself. In this case, it is recommended to install the operating system on a genuine CD.

2. Manually update the wrong driver.

The Windows operating system works normally, but manually updating the driver turns the hard disk controller driver update error, which leads to this failure. The solution is to enter the advanced menu of the Windows system and select the last normal configuration, and then you can enter the system normally.

3. Caused by changes in BIOS settings.

The Windows operating system is fine, but due to some reasons, the user modifies the BIOS settings, resulting in 0x0000007b failure.

Possible Causes:

1. The current 2004 version has compatibility issues with individual brands of hardware. Microsoft has not yet pushed the 2004 version to all Windows 10 users.

Second, some software in your computer is blocking the upgrade.

You can uninstall all third-party protection software and butler software and then try to upgrade with Eascend.

However, it is still recommended to wait for Microsoft to automatically push the upgrade, that is, the automatic update upgrade.

Problems and solutions to win10 system hot days.

You can go directly to Microsoft's official website to upgrade. This has the highest success rate.

Uninstall 360 Security Guard from the system.