Unable to Install Windows11 23H2, How to Fix?

I'm running Windows 11 with version 22623.1325 right now. 23H2 downloads reaches 25% of the installation and then stops. Any suggestions on how to finish the update? Any suggestion is appreciated.

Many Windows users set up the Windows 11 23H2 as soon as it was released. However, they have encountered several problems while installing this update, including being unable to install Windows 11 23H2. Below are some workable methods that can assist you in solving these Windows 11 23H2 failures:

Extend C Drive

As the system partition, the C drive is usually set as the default download location for Windows OS. Therefore, if there is insufficient space on the C drive, Windows won't let you install the new version. EaseUS Partition Master Professional will cover you in this case: you can easily extend the C drive with or without allocated space using its mighty "Resize/Move" feature:

Option 1. With Unallocated Space

Step 1. Install and launch this software. Go to the "Partition Manager" window and right-click the System partition to select "Resize/Move."

Step 2. To add the system partition end to the C: disk, drag it into the unallocated space. Press "OK."

Step 3. Click "Apply" and "Execute xx Task" to carry out the actions and expand the C drive.

Option 2. Without Unallocated Space

Step 1. In the "Partition Manager" window, right-click a big partition with enough free space on the system disk and select "Allocate Space."

Step 2. In the Allocate Space From (*) To section, select the system drive and drag the System C drive's end into the unallocated space. To confirm, click "OK".

Step 3. After selecting "Execute xx Task," a list of the outstanding tasks will appear. Click "Apply" to save the adjustments and expand the C drive.

Your computer will restart and update the changes after resizing the C drive. Still looking for more applicable solutions? Check this comprehensive guide:

🚩Further Reading: How to Fix Windows 11 23H2 Update Failure in 5 Ways