Difficulty in installing microsoft 365 on one of my other devices

Try this install path first:

1. Sign in to the Microsoft 365 Apps site with the same Microsoft account used for the Microsoft 365 purchase.
2. In the upper-right corner, select Install apps > Microsoft 365 apps.
3. On My account, under Office apps & devices, select Install Office.
4. Open the downloaded OfficeSetup.exe file.
5. If prompted with Do you want to allow this app to make changes to your device?, select Yes.
6. Wait for the installation to finish, then open the apps from the Start menu.

If installation still fails, check these common causes:

• The device must be running a supported operating system. Microsoft 365 or Office will not install on unsupported systems such as Windows Vista or Windows XP.
• On a PC, installation requires administrator rights on that computer.
• If an error message appears and it includes Learn More, select it for error-specific troubleshooting.
• If installation is very slow or fails, internet connection, firewall, proxy, or antivirus software can cause the issue.

If the install is hanging or not completing, use the offline installer:

1. Restart the device.
2. Try the install again.
3. If it still does not work, use the Microsoft 365 offline installer, which can bypass proxy, firewall, antivirus, or internet connection issues.

If this is a Microsoft 365 Family subscription, it can be shared with up to five other people, and each person can install Microsoft 365 on all their devices and be signed in on five at the same time.

If this is a one-time purchase of Office such as Office Home, Office Home & Business, or Office Professional, it can be installed on only one computer.

References:

• Install Microsoft 365 apps
• Download, install, or reinstall Microsoft 365 or Office 2024 on a PC or Mac
• Error code 30015-1011 (1392) and 30015-4 (1392) when installing Office
• "Something went wrong" error when you try to start a Microsoft 365 app