How to install unsigned Windows 10 apps using PowerShell • Pureinfotech.pdf

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How to install unsigned Windows 10 apps using PowerShell

When you come errors trying to install an app on Windows 10, it could be that appx package is unsigned. Here's

how you can get around the this problem.

Mauro Huc

@pureinfotech

October 11, 2016

Windows 10 apps are built and installed differently than traditional desktop applications. While with desktop

applications, you need to go through various installation steps, with an appx package, you only need to click

one button.

These new apps, part of the Universal Windows Platform (UWP), are usually available through the Windows

Store, but there will be times when you’ll have to install them outside of the Store.

Depending on how you acquired the app, you’ll come across apps with a digital signature, which is a

requirement before they’re submitted to the Windows Store, and those that might still under development and

are unsigned.

While you can install digitally signed Windows 10 apps with a single click from the Store and different

sources, you cannot install unsigned apps that easily. If you try to install an unsigned appx package, you’ll get

the

“Ask the app developer for a new app package. This one isn’t signed with a trusted certi cate

(0x800B0100)”

error message. However, the installation isn’t impossible, you just need to change the

installation settings and use the PowerShell command-line tool.

In this guide, you’ll learn the steps to install unsigned Windows 10 apps on your computer.

How to install an unsigned appx packages on Windows 10

It’s important to note that in most cases, you shouldn’t install unsigned apps on Windows 10, as they

may cause harm to your computer. However, if you’re are a developer or let’s say, you’re trying to install a new

Windows 10 app that has leaked onto the web, you can use the following steps to install the unsigned “.appx”

package.

How to enable Developers mode

If the app doesn’t have a digital signature, you have to enable the “Developer mode” on your computer.

Open

Settings.

Click on

Update & security.

Click on

For developers.

Under “Use developer features”, enable

Developer mode.

Enable Developer mode on Windows 10

Click

Yes.

Restart your computer to complete the task.

How to install unsigned Windows 10 apps using PowerShell

Once you have enabled the Developer mode, now you can proceed to install the unsigned packages.

If you are trying to install an app that wasn’t not packaged, meaning that you have a folder with all content,

instead of a single *.appx le, you will need to use the following instructions:

Open

Start,

search for

Windows PowerShell,

right-click the result, and select

Run as administrator.

Type the following command and press

Enter:

Add-AppxPackage -Path PATH-TO-APPXFILEFOLDER\AppxManifest.xml -Register

PowerShell command to install unsigned app using AppxManifest

If you obtained an *.appx le, you can simply double-click it, and click the Install button. Or to avoid running

into any issues, you can use the following PowerShell command:

Open

Start,

search for

Windows PowerShell,

right-click the result, and select

Run as administrator.

Type the following command and press

Enter:

Add-AppxPackage -Path PATH-TO-APPXFILE\APP.appx

PowerShell command to install unsigned appx package

Now you can simply open Start and launch the app like any other application.

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