diff --git a/src/components/ConversationSettings/BanSettings/BannedItem.vue b/src/components/ConversationSettings/BanSettings/BannedItem.vue
index cddd48399db..2ffde1a5171 100644
--- a/src/components/ConversationSettings/BanSettings/BannedItem.vue
+++ b/src/components/ConversationSettings/BanSettings/BannedItem.vue
@@ -6,7 +6,7 @@
 <template>
 	<li :key="ban.id" class="ban-item">
 		<div class="ban-item__header">
-			<span class="ban-item__caption">{{ ban.bannedId }}</span>
+			<span class="ban-item__caption">{{ ban.bannedDisplayName }}</span>
 			<div class="ban-item__buttons">
 				<NcButton type="tertiary" @click="showDetails = !showDetails">
 					{{ showDetails ? t('spreed', 'Hide details') : t('spreed', 'Show details') }}
@@ -17,8 +17,10 @@
 			</div>
 		</div>
 		<ul v-if="showDetails" class="ban-item__hint">
-			<!-- eslint-disable-next-line vue/no-v-html -->
-			<li v-for="(item, index) in banInfo" :key="index" v-html="item" />
+			<li v-for="(item, index) in banInfo" :key="index">
+				<strong>{{ item.label }}</strong>
+				<span>{{ item.value }}</span>
+			</li>
 		</ul>
 	</li>
 </template>
@@ -54,12 +56,12 @@ export default {
 	computed: {
 		banInfo() {
 			return [
-				t('spreed', '<strong>Banned by:</strong> {actor}', { actor: this.ban.actorId },
-					undefined, { escape: false, sanitize: false }),
-				t('spreed', '<strong>Date:</strong> {date}', { date: moment(this.ban.bannedTime * 1000).format('lll') },
-					undefined, { escape: false, sanitize: false }),
-				t('spreed', '<strong>Note:</strong> {note}', { note: this.ban.internalNote },
-					undefined, { escape: false, sanitize: false }),
+				// TRANSLATORS name of a moderator who banned a participant
+				{ label: t('spreed', 'Banned by:'), value: this.ban.moderatorDisplayName },
+				// TRANSLATORS Date and time of ban creation
+				{ label: t('spreed', 'Date:'), value: moment(this.ban.bannedTime * 1000).format('lll') },
+				// TRANSLATORS Internal note for moderators, usually a reason for this ban
+				{ label: t('spreed', 'Note:'), value: this.ban.internalNote },
 			]
 		},
 	},
diff --git a/src/components/RightSidebar/Participants/Participant.spec.js b/src/components/RightSidebar/Participants/Participant.spec.js
index b69bad0e19f..bd2689f1621 100644
--- a/src/components/RightSidebar/Participants/Participant.spec.js
+++ b/src/components/RightSidebar/Participants/Participant.spec.js
@@ -17,7 +17,7 @@ import NcButton from '@nextcloud/vue/dist/Components/NcButton.js'
 import NcCheckboxRadioSwitch from '@nextcloud/vue/dist/Components/NcCheckboxRadioSwitch.js'
 import NcDialog from '@nextcloud/vue/dist/Components/NcDialog.js'
 import NcInputField from '@nextcloud/vue/dist/Components/NcInputField.js'
-import NcTextField from '@nextcloud/vue/dist/Components/NcTextField.js'
+import NcTextArea from '@nextcloud/vue/dist/Components/NcTextArea.js'
 
 import Participant from './Participant.vue'
 import AvatarWrapper from '../../AvatarWrapper/AvatarWrapper.vue'
@@ -113,7 +113,7 @@ describe('Participant.vue', () => {
 				NcCheckboxRadioSwitch,
 				NcDialog,
 				NcInputField,
-				NcTextField,
+				NcTextArea,
 			},
 			directives: {
 				tooltip: tooltipMock,
@@ -676,10 +676,10 @@ describe('Participant.vue', () => {
 				const checkbox = dialog.findComponent(NcCheckboxRadioSwitch)
 				await checkbox.find('input').trigger('change')
 
-				const input = dialog.findComponent(NcTextField)
-				expect(input.exists()).toBeTruthy()
-				input.find('input').setValue(internalNote)
-				await input.find('input').trigger('change')
+				const textarea = dialog.findComponent(NcTextArea)
+				expect(textarea.exists()).toBeTruthy()
+				textarea.find('textarea').setValue(internalNote)
+				await textarea.find('textarea').trigger('change')
 
 				const button = findNcButton(dialog, 'Remove')
 				await button.find('button').trigger('click')
@@ -766,12 +766,19 @@ describe('Participant.vue', () => {
 				await testCannotRemove()
 			})
 
-			test('allows a moderator to ban a moderator', async () => {
+			test('allows a moderator to ban a user', async () => {
 				conversation.participantType = PARTICIPANT.TYPE.MODERATOR
 				participant.participantType = PARTICIPANT.TYPE.USER
 				await testCanBan()
 			})
 
+			test('allows a moderator to ban a federated user', async () => {
+				conversation.participantType = PARTICIPANT.TYPE.MODERATOR
+				participant.actorType = ATTENDEE.ACTOR_TYPE.FEDERATED_USERS
+				participant.participantType = PARTICIPANT.TYPE.USER
+				await testCanBan()
+			})
+
 			test('allows a moderator to ban a guest', async () => {
 				conversation.participantType = PARTICIPANT.TYPE.MODERATOR
 				participant.participantType = PARTICIPANT.TYPE.GUEST
diff --git a/src/components/RightSidebar/Participants/Participant.vue b/src/components/RightSidebar/Participants/Participant.vue
index 921258c3c02..835874cd1e3 100644
--- a/src/components/RightSidebar/Participants/Participant.vue
+++ b/src/components/RightSidebar/Participants/Participant.vue
@@ -318,17 +318,20 @@
 					{{ t('spreed', 'Also ban from this conversation') }}
 				</NcCheckboxRadioSwitch>
 				<template v-if="isBanParticipant">
-					<NcTextField v-if="isBanParticipant"
+					<NcTextArea v-if="isBanParticipant"
 						class="participant-dialog__input"
+						resize="vertical"
 						:label="t('spreed', 'Internal note (reason to ban)')"
+						:error="!!maxLengthWarning"
+						:helper-text="maxLengthWarning"
 						:value.sync="internalNote" />
 				</template>
 			</template>
 			<template #actions>
-				<NcButton type="tertiary" @click="isRemoveDialogOpen = false">
+				<NcButton type="tertiary" :disabled="isLoading" @click="isRemoveDialogOpen = false">
 					{{ t('spreed', 'Dismiss') }}
 				</NcButton>
-				<NcButton type="error" @click="removeParticipant">
+				<NcButton type="error" :disabled="isLoading || !!maxLengthWarning" @click="removeParticipant">
 					{{ t('spreed', 'Remove') }}
 				</NcButton>
 			</template>
@@ -376,7 +379,7 @@ import NcActionText from '@nextcloud/vue/dist/Components/NcActionText.js'
 import NcButton from '@nextcloud/vue/dist/Components/NcButton.js'
 import NcCheckboxRadioSwitch from '@nextcloud/vue/dist/Components/NcCheckboxRadioSwitch.js'
 import NcDialog from '@nextcloud/vue/dist/Components/NcDialog.js'
-import NcTextField from '@nextcloud/vue/dist/Components/NcTextField.js'
+import NcTextArea from '@nextcloud/vue/dist/Components/NcTextArea.js'
 import Tooltip from '@nextcloud/vue/dist/Directives/Tooltip.js'
 
 import ParticipantPermissionsEditor from './ParticipantPermissionsEditor.vue'
@@ -411,7 +414,7 @@ export default {
 		NcButton,
 		NcCheckboxRadioSwitch,
 		NcDialog,
-		NcTextField,
+		NcTextArea,
 		ParticipantPermissionsEditor,
 		// Icons
 		Account,
@@ -488,6 +491,7 @@ export default {
 			isBanParticipant: false,
 			internalNote: '',
 			disabled: false,
+			isLoading: false,
 		}
 	},
 
@@ -796,10 +800,21 @@ export default {
 			return this.canBeModerated
 				&& !this.isModerator
 				&& (this.participant.actorType === ATTENDEE.ACTOR_TYPE.USERS
+					|| this.participant.actorType === ATTENDEE.ACTOR_TYPE.FEDERATED_USERS
 					|| this.participant.actorType === ATTENDEE.ACTOR_TYPE.GUESTS
 					|| this.participant.actorType === ATTENDEE.ACTOR_TYPE.EMAILS)
 		},
 
+		maxLengthWarning() {
+			if (this.internalNote.length <= 4000) {
+				return ''
+			}
+			return t('spreed', 'The text must be less than or equal to {maxLength} characters long. Your current text is {charactersCount} characters long.', {
+				maxLength: 4000,
+				charactersCount: this.internalNote.length,
+			})
+		},
+
 		removeParticipantLabel() {
 			switch (this.participant.actorType) {
 			case ATTENDEE.ACTOR_TYPE.GROUPS:
@@ -995,15 +1010,22 @@ export default {
 		},
 
 		async removeParticipant() {
-			await this.$store.dispatch('removeParticipant', {
-				token: this.token,
-				attendeeId: this.attendeeId,
-				banParticipant: this.isBanParticipant,
-				internalNote: this.internalNote,
-			})
-			this.isBanParticipant = false
-			this.internalNote = ''
-			this.isRemoveDialogOpen = false
+			this.isLoading = true
+			try {
+				await this.$store.dispatch('removeParticipant', {
+					token: this.token,
+					attendeeId: this.attendeeId,
+					banParticipant: this.isBanParticipant,
+					internalNote: this.internalNote,
+				})
+				this.isBanParticipant = false
+				this.internalNote = ''
+				this.isRemoveDialogOpen = false
+			} catch (error) {
+				console.error('Error while removing the participant: ', error)
+			} finally {
+				this.isLoading = false
+			}
 		},
 
 		grantAllPermissions() {
diff --git a/src/store/participantsStore.js b/src/store/participantsStore.js
index 05da627ad1b..514d50573b4 100644
--- a/src/store/participantsStore.js
+++ b/src/store/participantsStore.js
@@ -581,7 +581,7 @@ const actions = {
 				showSuccess(t('spreed', 'Participant is banned successfully'))
 			} catch (error) {
 				showError(t('spreed', 'Error while banning the participant'))
-				console.error('Error while banning the participant: ', error)
+				throw error
 			}
 		}
 		await removeAttendeeFromConversation(token, attendeeId)
diff --git a/src/views/ForbiddenView.vue b/src/views/ForbiddenView.vue
index d44e077d291..69fbd099260 100644
--- a/src/views/ForbiddenView.vue
+++ b/src/views/ForbiddenView.vue
@@ -5,7 +5,7 @@
 
 <template>
 	<EmptyView :name="t('spreed', 'You do not have permissions to access this conversation.')"
-		:description="t('spreed', 'Join a conversation or start a new one!')">
+		:description="t('spreed', 'Join a different conversation or start a new one.')">
 		<template #icon>
 			<Octagon />
 		</template>