Installation

Install from the Microsoft 365 Apps page instead of retrying the nonresponsive portal button; Microsoft has fixed a service issue that caused Install Office to disappear without starting the download.^1^

Download and install

1. Open the Microsoft 365 installation page from the official installation article.^2^
2. Select Sign in and use the Microsoft account connected to the active subscription.
3. On the Apps page, select Install apps, and then Install.
4. When the browser responds:
   • Microsoft Edge: select Run.
   • Google Chrome: select Setup.
   • Firefox: select Save File, open Downloads, and run the downloaded installer.
5. If Windows displays Do you want to allow this app to make changes to your device?, select Yes.
6. Wait for “You’re all set! Office is installed now.”
7. Open Start, search for Word, and launch it. Accept the licence agreement and sign in with the same Microsoft account to activate Microsoft 365.^2^

If the download still does not begin

Run Microsoft’s Microsoft 365 setup troubleshooter on the affected PC:

1. Open the Microsoft 365 troubleshooters page and select Start for Microsoft 365 setup troubleshooter.
2. When prompted that the website is trying to open Get Help, select Open.
3. Follow the prompts and restart Windows if requested.

The troubleshooter requires Windows 10 or later and must run on the PC where Microsoft 365 is being installed.^3^

Offline-installer fallback

If the normal download remains blocked—particularly by an unreliable connection, proxy, firewall, or antivirus—use the Microsoft 365 offline installer.^4^

For a home subscription:

1. Open the offline-installer instructions and choose Office for home.
2. In the installation window, choose Offline installer from Choose a version.
3. Select the language and Install.
4. Save and open O365HomePremRetail.img.
5. In the virtual drive, open the Office folder.
6. Run Setup64.exe, or Setup32.exe if you specifically require 32-bit Office.
7. After installation, reconnect to the Internet, open Word or Excel, and accept the licence terms to activate.^5^

If none of these paths starts a download, record which button was selected, whether it disappeared, the browser used, and any message shown in Get Help; those details distinguish a portal/account problem from a device connectivity problem.

References

1. Office installation from portal.office.com not starting after selecting Install | Microsoft Support
2. Install on a PC
3. Microsoft 365 troubleshooters | Microsoft Support
4. "Something went wrong" error when you try to start a Microsoft 365 app
5. Use the Office offline installer