company branding doesn't work for password page in Azure Portal
I've created company branding from the Azure portal for my application.
This is working as expected for the first page i.e, the username page. When I click on next for the password page, the custom branding disappears and default Microsoft background appears.
I want the branding to be continued for the password page also so that there would be consistency.
You probably try to sign in with a Microsoft Account instead of your Azure Active Directory account. If you sign in with a "native" Azure Active Directory account you will continue see your company branded page.
You can customize your Azure AD sign-in pages, which appear when users sign in to your organization's tenant-specific apps, such as https://outlook.com/contoso.com, or when passing a domain variable, such as https://passwordreset.microsoftonline.com/?whr=contoso.com.
Your custom branding won't immediately appear when your users go to sites such as, www.office.com. Instead, the user has to sign-in before your customized branding appears.
Visit this link for more information