The Cross-Device Experience Host is an interoperable feature that enables connection between your mobile phone and PC. You might encounter an unexpected issue when following the illustration to install a Cross-Device Experience Host but it fails. In this NewsPivot post, you can find solutions for the Cross-Device Experience Host not installing in Windows.
Help: There’s an apparently new feature that is being rolled out by Microsoft. It is a new way to connect your phone. I can not get it to install even though the option is available on my PC. I’ve contacted Microsoft support and instead of solving the problem, they told me to seek help from here. I’m hoping someone out there can help me because Microsoft failed 3 times today.answers.microsoft.com
5 Methods to Fix Cross-Device Experience Host Not Installing
Cross-Device Experience Host not installing is a common issue. The PC’s inability to install Cross-Device Experience Host prevents activating this integrated data and notification-sharing feature. The problem probably gets triggered by an installation glitch. To handle this issue, you can try the methods below.
Workaround 1: Reset Microsoft Store
Sometimes, resetting applications can clear the potentially corrupted cache that may cause diverse problems, including Microsoft Store can’t install or update apps. If you can’t install Cross-Device Experience Host in Windows, you can reset the Microsoft Store without uninstalling apps or altering account settings to handle this issue.
Step 1: Click the small magnifying glass icon and type wsreset.exe in the search bar. Then press the Enter button.
Step 2: After it runs, wait till a black window shows up, and don’t close it before the Microsoft Store pops up.

Workaround 2: Repair Corrupted System Files
In addition, the PC can’t install Cross-Device Experience Host probably due to corrupted system files. Accordingly, you can scan and repair corrupted system files with the steps below.
Step 1: Click the small magnifying glass icon, and type Command Prompt in the search bar.
Step 2: Right-click the relevant result and select Run as administrator.
Step 3: In the following UAC prompt, click the Yes button.
Step 4: Copy and paste the command and hit Enter:
sfc/scannow

Step 5: After scanning, copy and paste the following commands in order and hit Enter at the end of each command line.
Dism /Online /Cleanup-Image /CheckHealth
Dism /Online /Cleanup-Image /ScanHealth
Dism /Online /Cleanup-Image /RestoreHealth

Workaround 3: Run the Windows Store Apps Troubleshooter
In general, if there are minor bugs or issues in an application that affect its operation of the app, users can use Windows troubleshooting settings to detect and fix them. Let’s see how.
Step 1: Type Troubleshoot settings in the Windows Search bar and select the relevant result.
Step 2: In the right column, choose Additional Troubleshooters.

Step 3: In the following window, scroll down to find Windows Store Apps and click it. Then choose Run the troubleshooter.

Workaround 4: Using Command Prompt to Install It
If you encounter the Cross-Device Experience Host installation issue in the Microsoft Store, you can bypass the Microsoft Store and directly install it through Command Prompt.
Step 1: Click the small magnifying glass icon and type Command Prompt. Then right-click the appropriate result and select Run as administrator.
Step 2: Click the Yes button in the UAC prompt.
Step 3: Copy and paste the command and hit Enter to execute it:
winget install 9NTXGKQ8P7N0

Workaround 5: Set the System Drive as the Default Save Location
If the system drive on your computer is not set as the default location (C: drive) for downloading applications, it might cause issues with app installation and functionality. Hence, you can follow the approach to set the system drive as the default location.
Step 1: Press the Win + I key combination to launch Settings and select the System option.
Step 2: Choose the Storage option from the left pane.
Step 3: Under the More Storage Settings section, click Change where new content is saved.

Step 4: Under the New apps will save to section, select the drive where Windows is installed (by default, it would be C: drive).

Bottom Line
Cross-Device Experience Host is vital in connecting your mobile phone and the computer; thus, it is troublesome to encounter the Cross-Device Experience Host not installing issue. We have discussed these solutions in detail so that you can get a swift solution. Hope the above methods are helpful for you!