The Microsoft 365 Blog

Hackers Hate THIS! Brand Your Microsoft 365 Portal Today

Sep 05, 2025

Branding Your Microsoft 365 Login Page: Security, Professionalism and Peace of Mind

When you think of branding, your mind probably goes straight to pens, mugs and maybe even mouse mats. But branding your Microsoft 365 login page? It may sound like a gimmick at first, but the reality is far more practical. It is about security.

Why Branding Matters

The default Microsoft 365 login page looks the same for every user across the globe. That sameness makes it easy for cybercriminals to copy. They create fake login pages that look identical, tricking staff into handing over their credentials. This is one of the most common forms of phishing.

Branding your Microsoft 365 portal changes that. By adding your company logo, background image and even a custom message, you train your team to recognise what is real and what is not. If they see a generic, unbranded login page, they are more likely to pause before entering their password.

Branding reduces the risk of phishing attacks. It also gives staff a familiar, trusted login experience.

Beyond Security: Professionalism

It is not just about cyber security. A branded login page looks professional. When guests or partners are invited to access your tenant, they see a polished, customised portal that reflects your business identity. It is a simple way to communicate ownership and professionalism. The best part is that it is free with a Microsoft 365 paid plan.

How to Set Up Branding in Microsoft 365

Customising your Microsoft 365 login page is done through the Entra Admin Center (formerly Azure AD). Here is how the process works:

  1. Access the Entra Admin Center
    Go to the Microsoft 365 Admin Center, then open the Entra Admin Center under Identity.

  2. Find Custom Branding
    Under Entra ID, select Custom Branding and choose to customise the default sign in experience.

  3. Prepare Your Images
    You do not need a graphic designer. AI tools like Copilot or ChatGPT can generate background images, favicons and more. Upload your company logo, a background image that relates to your location or industry, and set your brand colours.

  4. Choose Your Layout
    Decide whether you want a full screen or partial background. Add or hide the header, and configure the footer with links to your privacy policy or terms of use.

  5. Add Custom Text
    Include a unique sign in page message that reinforces legitimacy, such as “Welcome to [Your Company], authorised users only”.

  6. Save and Publish
    Once configured, test it out by signing in again. Your users will see a branded login page complete with your chosen images, text and links.

The User Experience

With branding in place, employees and guests are greeted with a login screen that feels familiar and secure. They notice your company logo, see your background image and have confidence that they are in the right place. If they ever encounter a fake, generic page, they will spot the difference.

Final Thoughts

Branding your Microsoft 365 login page is not about vanity. It is about creating visual certainty. It strengthens your cyber defences, reduces phishing risks and elevates professionalism. Best of all, it costs nothing to implement.

So while logos on mugs and mouse mats might be optional, logos on your Microsoft 365 login page are essential. Give your staff peace of mind and show your clients that you take security seriously.


Next Steps: Ready to secure and professionalise your Microsoft 365 login experience? Head into your Entra Admin Center today and set up your custom branding.