diff --git a/config/application.rb b/config/application.rb
index e41dc316bb..2e7eccae48 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -73,6 +73,29 @@ end
 
 require File.dirname(__FILE__) + '/../lib/open_project/configuration'
 
+env = ENV['RAILS_ENV'] || 'production'
+db_config = ActiveRecord::Base.configurations[env] || {}
+db_adapter = db_config['adapter']
+if db_adapter&.start_with? 'mysql'
+  warn <<~ERROR
+    ======= INCOMPATIBLE DATABASE DETECTED =======
+    Your database is set up for use with a MySQL or MySQL-compatible variant.
+    This installation of OpenProject 10.0. no longer supports these variants.
+
+    The following guides provide extensive documentation for migrating
+    your installation to a PostgreSQL database:
+
+    https://www.openproject.org/migration-guides/
+
+    This process is mostly automated so you can continue using your
+    OpenProject installation within a few minutes!
+
+    ==============================================
+  ERROR
+
+  Kernel.exit 1
+end
+
 module OpenProject
   class Application < Rails::Application
     # Settings in config/environments/* take precedence over those specified here.
diff --git a/config/initializers/01-mysql-error.rb b/config/initializers/01-mysql-error.rb
deleted file mode 100644
index 5989461439..0000000000
--- a/config/initializers/01-mysql-error.rb
+++ /dev/null
@@ -1,20 +0,0 @@
-db_adapter = ActiveRecord::Base.configurations[Rails.env]['adapter']
-if db_adapter.start_with? 'mysql'
-  warn <<~ERROR
-    ======= INCOMPATIBLE DATABASE DETECTED =======
-    Your database is set up for use with a MySQL or MySQL-compatible variant.
-    This installation of OpenProject 10.0. no longer supports these variants.
-
-    The following guides provide extensive documentation for migrating
-    your installation to a PostgreSQL database:
-
-    https://www.openproject.org/migration-guides/
-
-    This process is mostly automated so you can continue using your
-    OpenProject installation within a few minutes!
-
-    ==============================================
-  ERROR
-
-  Kernel.exit 1
-end
diff --git a/frontend/src/app/modules/grids/widgets/header/header.component.html b/frontend/src/app/modules/grids/widgets/header/header.component.html
index b0cee2c169..3d14e7c409 100644
--- a/frontend/src/app/modules/grids/widgets/header/header.component.html
+++ b/frontend/src/app/modules/grids/widgets/header/header.component.html
@@ -1,6 +1,6 @@
 <h3 class="widget-box--header"
     [ngClass]="{ '-editable': isRenameable }">
-  <i class="icon-context"
+  <i class="widget-box--header-icon icon-context"
      aria-hidden="true"
      [ngClass]="iconClass"></i>
 
diff --git a/frontend/src/app/modules/grids/widgets/header/header.component.sass b/frontend/src/app/modules/grids/widgets/header/header.component.sass
index 047041a3de..256bbfe126 100644
--- a/frontend/src/app/modules/grids/widgets/header/header.component.sass
+++ b/frontend/src/app/modules/grids/widgets/header/header.component.sass
@@ -1,7 +1,14 @@
-.widget-box--header.-editable
-  .icon-context
-    padding-top: 5px
+.widget-box--header
+  margin-top: 5px
 
+  &.-editable
+    margin-top: 0
+
+    .widget-box--header-icon
+      padding-top: 5px
+
+.widget-box--header-icon
+  align-self: center
 
 .widget-box--header-title
   padding-right: 5px
diff --git a/modules/auth_plugins/lib/open_project/plugins/auth_plugin.rb b/modules/auth_plugins/lib/open_project/plugins/auth_plugin.rb
index f2e53e4ffb..514bbe4695 100644
--- a/modules/auth_plugins/lib/open_project/plugins/auth_plugin.rb
+++ b/modules/auth_plugins/lib/open_project/plugins/auth_plugin.rb
@@ -47,11 +47,22 @@ module OpenProject::Plugins
     end
 
     def self.providers_for(strategy)
-      strategies[strategy_key(strategy)].map(&:call).flatten.map(&:to_hash)
+      filtered_strategies strategies[strategy_key(strategy)].map(&:call).flatten.map(&:to_hash)
     end
 
     def self.providers
-      strategies.values.flatten.map(&:call).flatten.map(&:to_hash)
+      filtered_strategies strategies.values.flatten.map(&:call).flatten.map(&:to_hash)
+    end
+
+    def self.filtered_strategies(options)
+      options.select do |provider|
+        name = provider[:name]&.to_s
+        next true if !EnterpriseToken.show_banners? || name == 'developer'
+
+        warn_unavailable(name)
+
+        false
+      end
     end
 
     def self.strategy_key(strategy)
@@ -66,11 +77,19 @@ module OpenProject::Plugins
 
       [camelization, name].compact.first.underscore.to_sym
     end
+
+    def self.warn_unavailable(name)
+      RequestStore.fetch("warn_unavailable_auth_#{name}") do
+        Rails.logger.warn { "OmniAuth SSO strategy #{name} is only available for Enterprise Editions." }
+        true
+      end
+    end
   end
 
   class ProviderBuilder
     def strategy(strategy, &providers)
       key = AuthPlugin.strategy_key(strategy)
+
       if AuthPlugin.strategies.include? key
         AuthPlugin.strategies[key] << providers
       else
diff --git a/modules/auth_saml/lib/open_project/auth_saml/engine.rb b/modules/auth_saml/lib/open_project/auth_saml/engine.rb
index c352925d8f..4c8d2396cb 100644
--- a/modules/auth_saml/lib/open_project/auth_saml/engine.rb
+++ b/modules/auth_saml/lib/open_project/auth_saml/engine.rb
@@ -33,6 +33,7 @@ module OpenProject
       register_auth_providers do
         settings = Rails.root.join('config', 'plugins', 'auth_saml', 'settings.yml')
         if settings.exist?
+          Rails.logger.info("[auth_saml] Registering saml integration from 'config/plugins/auth_saml/settings.yml'")
           providers = YAML::load(File.open(settings)).symbolize_keys
           strategy :saml do
             providers.values.map do |h|
@@ -45,8 +46,6 @@ module OpenProject
               h.symbolize_keys
             end
           end
-        else
-          Rails.logger.warn("[auth_saml] Missing settings from '#{settings}', skipping omniauth registration.")
         end
       end
     end
diff --git a/modules/openid_connect/app/controllers/openid_connect/providers_controller.rb b/modules/openid_connect/app/controllers/openid_connect/providers_controller.rb
index 0fde558d8c..fbd93b0844 100644
--- a/modules/openid_connect/app/controllers/openid_connect/providers_controller.rb
+++ b/modules/openid_connect/app/controllers/openid_connect/providers_controller.rb
@@ -4,6 +4,7 @@ module OpenIDConnect
     menu_item :plugin_openid_connect
 
     before_action :require_admin
+    before_action :check_ee
     before_action :find_provider, only: [:edit, :update, :destroy]
 
     def index; end
@@ -53,6 +54,13 @@ module OpenIDConnect
 
     private
 
+    def check_ee
+      if EnterpriseToken.show_banners?
+        render template: '/openid_connect/providers/upsale'
+        return false
+      end
+    end
+
     def create_params
       params.require(:openid_connect_provider).permit(:name, :display_name, :identifier, :secret)
     end
diff --git a/modules/openid_connect/app/views/openid_connect/providers/upsale.html.erb b/modules/openid_connect/app/views/openid_connect/providers/upsale.html.erb
new file mode 100644
index 0000000000..f946f8e78a
--- /dev/null
+++ b/modules/openid_connect/app/views/openid_connect/providers/upsale.html.erb
@@ -0,0 +1,31 @@
+<% html_title(t(:label_administration), t('openid_connect.providers.plural')) -%>
+
+
+<%= breadcrumb_toolbar(t('openid_connect.providers.plural')) %>
+<div class="notification-box upsale-notification">
+  <div class="notification-box--content">
+    <h3><%= t('admin.enterprise.upgrade_to_ee') %></h3>
+    <%= image_tag "enterprise_edition.png", class: "widget-box--teaser-image" %>
+
+    <p><%= t('homescreen.blocks.upsale.description') %></p>
+
+    <ul class="">
+      <li>
+        <%= t('homescreen.blocks.upsale.additional_features') %>
+      </li>
+      <li>
+        <%= t('homescreen.blocks.upsale.professional_support') %>
+      </li>
+    </ul>
+    <p>
+      <b><%= t('homescreen.blocks.upsale.become_hero') %></b> <%= t('homescreen.blocks.upsale.you_contribute') %>
+    </p>
+    <%= link_to( "#{OpenProject::Static::Links.links[:upsale][:href]}/?utm_source=unknown&utm_medium=community-edition&utm_campaign=enterprise-openid-connect",
+                 { class: 'button -alt-highlight',
+                   aria: {label: t('admin.enterprise.order')},
+                   title: t('admin.enterprise.order')}) do %>
+      <%= op_icon('button--icon icon-add') %>
+      <span class="button--text"><%= t('admin.enterprise.order') %></span>
+    <% end %>
+  </div>
+</div>
diff --git a/modules/openid_connect/spec/controllers/providers_controller_spec.rb b/modules/openid_connect/spec/controllers/providers_controller_spec.rb
index f67cd427c0..1db9b2a193 100644
--- a/modules/openid_connect/spec/controllers/providers_controller_spec.rb
+++ b/modules/openid_connect/spec/controllers/providers_controller_spec.rb
@@ -16,6 +16,7 @@ require 'spec_helper'
 
 describe ::OpenIDConnect::ProvidersController, type: :controller do
   let(:user) { FactoryBot.build_stubbed :admin }
+  let(:ee) { true }
 
   let(:valid_params) do
     {
@@ -27,6 +28,17 @@ describe ::OpenIDConnect::ProvidersController, type: :controller do
 
   before do
     login_as user
+    allow(EnterpriseToken).to receive(:show_banners?).and_return(!ee)
+  end
+
+  context 'when not ee' do
+    let(:ee) { false }
+
+    it 'renders upsale' do
+      get :index
+      expect(response.status).to eq 200
+      expect(response).to render_template 'openid_connect/providers/upsale'
+    end
   end
 
   context 'when not admin' do
diff --git a/modules/openid_connect/spec/requests/openid_connect_spec.rb b/modules/openid_connect/spec/requests/openid_connect_spec.rb
index 5664049024..cade98aa1b 100644
--- a/modules/openid_connect/spec/requests/openid_connect_spec.rb
+++ b/modules/openid_connect/spec/requests/openid_connect_spec.rb
@@ -46,6 +46,8 @@ describe 'OpenID Connect', type: :rails_request do
   end
 
   before do
+    allow(EnterpriseToken).to receive(:show_banners?).and_return(false)
+
     # The redirect will include an authorisation code.
     # Since we don't actually get a valid code in the test we will stub the resulting AccessToken.
     allow_any_instance_of(OpenIDConnect::Client).to receive(:access_token!) do
@@ -137,7 +139,7 @@ describe 'OpenID Connect', type: :rails_request do
   end
 
   context 'provider configuration through the settings' do
-    it 'should make providers that have been configured through settings available without requiring a restart' do
+    before do
       allow(Setting).to receive(:plugin_openproject_openid_connect).and_return(
         'providers' => {
           'google' => {
@@ -150,7 +152,16 @@ describe 'OpenID Connect', type: :rails_request do
           }
         }
       )
+    end
 
+    it 'will show no option unless EE' do
+      allow(EnterpriseToken).to receive(:show_banners?).and_return(true)
+      get '/login'
+      expect(response.body).not_to match /Google/i
+      expect(response.body).not_to match /Azure/i
+    end
+
+    it 'should make providers that have been configured through settings available without requiring a restart' do
       get '/login'
       expect(response.body).to match /Google/i
       expect(response.body).to match /Azure/i