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Editing the buttons on the sign in pages

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Posted on by Matthu

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Whilst attempting to improve my user's sign-in experience, I have found it quite challenging to target the specific buttons on the sign-in pop-ups/email verification stages and, ultimately, the sign-in page.

These pages are not visible to me as a logged-in admin as obviously you cannot be both logged in and on the sign-in pages.

I found this thread which is excellent for toggling the 'show password' and working with that on the sign-in page Power Apps portals: Customise the sign-in form- To... - Power Platform Community (microsoft.com)

So I would like some help to change the button colours please?

Many thanks,

Matthu

@ragavanrajan

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Design & build

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Fubar 8,379 Super User 2025 Season 2 on at

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@matthu wrote:
obviously you cannot be both logged in and on the sign-in pages.

You can see the portals sign-in page when signed in - immediately after signing in use your browsers back button.

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Matthu 289 on at

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Hi @Fubar thankyou for responding. This doesnt work for me as I have to go through MFA so when I attempt to go back It then says login failed.

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Fubar 8,379 Super User 2025 Season 2 on at

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just put the sign-in url in the browser bar: <yourportaldomain>/SignIn?returnUrl=%2F

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Matthu 289 on at

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Hi Fubar,

Thank you and for reference, for anyone else looking to this thread for answers, this works and is a useful trick.

However, in my case, I am attempting to edit the B2C log-in screen that appears prior to the portal log-in. I am attempting to edit the buttons that here are in blue:

For me the portal presents the azure b2c log in page first and then goes through.

I cannot seem to add anything to my custom css that works to change the colour of these buttons. @ragavanrajan do you recall we spoke about this before?

Any further help great fully received 🙂

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Matthu 289 on at

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Fubar 8,379 Super User 2025 Season 2 on at

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The B2C is nothing to do with the portal, those changes have to be made in Azure B2C.

See the links in the "See also" section at the bottom of this link https://learn.microsoft.com/en-us/power-apps/maker/portals/configure/azure-ad-b2c the 3rd one "Customize the user interface...." contains details about how to style etc

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Matthu 289 on at

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Ah I see, thank you @Fubar for your patience and sorry for my misunderstanding of that. I understand what I need to do now.

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