How to use SetupDiag to determine reason of upgrade problems on Windows 10

Although Windows 10 usually provides an error code about an upgrade or update failure, sometimes, information technology won't testify anything leaving you guessing the root of the problem, which tin be very frustrating, peculiarly if you're trying to install a new version of the Bone.

Yet, Microsoft offers an optional tool, known as SetupDiag, which is bachelor for free and designed to diagnose and determine the exact reason an update or upgrade failed to install.

SetupDiag works by analyzing the Windows Setup logs (left behind past the installation process) and checking the information confronting a database of known issues to determine the reason for the installation failure, which you tin utilize to find a solution for the problem.

At the time of this writing, the SetupDiag tool includes a database (rules.xml) with 60 rules to friction match known issues, but the rules receive updates as new versions of the tool rollout.

In this Windows 10 guide, we'll walk you through the steps to employ the SetupDiag tool to understand the reason an update or upgrade failed to install to assistance y'all notice a solution.

How to cheque Windows ten upgrade failure using SetupDiag

The process of using SetupDiag is straightforward. You only need to make sure that the required version of the .NET Framework is installed, and so run the tool, and review the results.

Confirm .Internet Framework version

To ostend that the device meets the minimum .Internet Framework requirements, use these steps:

Open up Outset.
Search for Command Prompt, right-click the top result, and select the Run every bit administrator selection.
Type the following command to reveal the version of .NET installed and press Enter:

reg query "HKLM\SOFTWARE\Microsoft\Net Framework Setup\NDP\v4" /south
Confirm that the "Version" field reads something higher than iv.six.xxxxx, then you lot tin can run the tool.

Source: Windows Primal

If the device includes .NET 4.half-dozen or higher, then go along with the steps below. Otherwise, download the .Cyberspace version 4.6 offline installer, then double-click the file to install the software.

Run SetupDiag tool

To run the SetupDiag tool on Windows ten, use these steps:

Open SetupDiag download page.
Click the Download SetupDiag button.

Source: Windows Cardinal
Select an empty folder to download the files.

Quick tip: You can always create a new folder using the New binder button from the "Save Every bit" dialog box and name it: "SetupDiag".
Click the Save button.
Open File Explorer.
Browse to the downloaded file location.
Right-click the "SetupDiag.exe" and select the Run as ambassador option.

Source: Windows Central

One time you complete the steps, the tool will run immediately without the demand of installation or user interaction. Information technology'll check the bachelor rules against the logs of the failed installation, and the SetugDiag will close automatically.

After the process completes, y'all'll end up with three new files, including the "Log.zip," "SetupDiag.exe.config," and "SetupDiagResults.log" inside the binder where you downloaded the SetupDiag.exe file.

Understand SetupDiag results

To view and understand the SetupDiag results, employ these steps:

Open up File Explorer.
Scan to the downloaded file location.
Right-click the SetupDiagResults.log file and select the Open up pick.

Source: Windows Key

After you complete the steps, the log file will open up with the results that the tool was able to identify based on the known rules.

For instance, for this guide, we started the upgrade procedure to a newer version of Windows x, and so the device was forcedly shutdown. The setup process reverted to the previous version, and error logs were saved on the device.

In the get-go office of the file, you'll observe some arrangement data well-nigh your reckoner, including device name, manufacturer, BIOS (UEFI) version, the original version of Windows 10, registered antivirus, upgrade date, and more.

Then below the system data, you'll find the details of the error. In this case, we tin see that the installation process failed while applying the new files since the device was forcedly shut down, and we tin see the error code (0xC1900101-0x2000C) of the problem.

Depending on the mistake, y'all'll see dissimilar details that will help you lot to detect out the root of the cause and steps to resolve the problem.

If you don't see recommendations to ready the issue, then follow the bachelor link, or utilise the error code or any data available to research the trouble online. Also, you can always perform an online search or use the official Microsoft forums or Windows Fundamental forums.