diff --git a/public/UITexts.example b/public/UITexts.example
index b12e768..9ad6f72 100644
--- a/public/UITexts.example
+++ b/public/UITexts.example
@@ -38,5 +38,19 @@
     "wiredfurni.params.texts.placeholder_type": "Tipo di segnaposto:",
     "wiredfurni.params.texts.placeholder_type.1": "Singolo",
     "wiredfurni.params.texts.placeholder_type.2": "Multiplo",
-    "wiredfurni.params.texts.select_delimiter": "Seleziona il delimitatore:"
+    "wiredfurni.params.texts.select_delimiter": "Seleziona il delimitatore:",
+    "groupforum.list.tab.most_active": "Meest active threads",
+    "groupforum.list.tab.my_forums": "Mijn group forums",
+    "groupforum.list.no_forums": "Er zijn geen forums",
+    "groupforum.view.threads": "Aantal threads",
+    "groupforum.thread.pin": "Pin hem vast",
+    "groupforum.thread.unpin": "Unpin bericht",
+    "groupforum.thread.lock": "Lock de thread",
+    "groupforum.thread.unlock": "Unlock de thread",
+    "groupforum.thread.hide": "Verberg thread",
+    "groupforum.thread.restore": "Maak thread weer zichtbaar",
+    "groupforum.thread.delete": "Verwijder thread + posts",
+    "groupforum.message.hide": "Verberg bericht",
+    "group.forum.enable.caption": "Enable / Disable Group forum",
+    "group.forum.enable.help": "Als je de group forum disabled dan verwijderen ook alle posts!"
 }
diff --git a/src/api/groups/IGroupData.ts b/src/api/groups/IGroupData.ts
index bb65b49..b5d43b3 100644
--- a/src/api/groups/IGroupData.ts
+++ b/src/api/groups/IGroupData.ts
@@ -8,6 +8,7 @@ export interface IGroupData
     groupHomeroomId: number;
     groupState: number;
     groupCanMembersDecorate: boolean;
+    groupHasForum: boolean;
     groupColors: number[];
     groupBadgeParts: GroupBadgePart[];
 }
diff --git a/src/components/groups/views/GroupManagerView.tsx b/src/components/groups/views/GroupManagerView.tsx
index b8336ab..c24b547 100644
--- a/src/components/groups/views/GroupManagerView.tsx
+++ b/src/components/groups/views/GroupManagerView.tsx
@@ -77,6 +77,7 @@ export const GroupManagerView: FC<{}> = props =>
             groupHomeroomId: parser.roomId,
             groupState: parser.state,
             groupCanMembersDecorate: parser.canMembersDecorate,
+            groupHasForum: parser.hasForum,
             groupColors: [ parser.colorA, parser.colorB ],
             groupBadgeParts
         });
@@ -85,7 +86,7 @@ export const GroupManagerView: FC<{}> = props =>
     if(!groupData || (groupData.groupId <= 0)) return null;
 
     return (
-        <NitroCardView className="nitro-group-manager">
+        <NitroCardView className="nitro-group-manager w-[555px] h-[415px]">
             <NitroCardHeaderView headerText={ LocalizeText('group.window.title') } onCloseClick={ onClose } />
             <NitroCardTabsView>
                 { TABS.map(tab =>
diff --git a/src/components/groups/views/forums/GroupForumListView.tsx b/src/components/groups/views/forums/GroupForumListView.tsx
index 7156274..9ac2c5e 100644
--- a/src/components/groups/views/forums/GroupForumListView.tsx
+++ b/src/components/groups/views/forums/GroupForumListView.tsx
@@ -16,7 +16,7 @@ export const GroupForumListView: FC<GroupForumListViewProps> = props =>
 {
     const { onOpenForum = null } = props;
     const [ forums, setForums ] = useState<ForumData[]>([]);
-    const [ listMode, setListMode ] = useState<number>(2); // 2 = most active
+    const [ listMode, setListMode ] = useState<number>(0); // 0 = most active
     const [ startIndex, setStartIndex ] = useState<number>(0);
     const [ totalForums, setTotalForums ] = useState<number>(0);
 
@@ -59,8 +59,8 @@ export const GroupForumListView: FC<GroupForumListViewProps> = props =>
                         className="form-select form-select-sm"
                         value={ listMode }
                         onChange={ e => { setListMode(parseInt(e.target.value)); setStartIndex(0); } }>
-                        <option value={ 2 }>{ LocalizeText('groupforum.list.tab.most_active') }</option>
-                        <option value={ 1 }>{ LocalizeText('groupforum.list.tab.my_forums') }</option>
+                        <option value={ 0 }>{ LocalizeText('groupforum.list.tab.most_active') }</option>
+                        <option value={ 2 }>{ LocalizeText('groupforum.list.tab.my_forums') }</option>
                     </select>
                 </Flex>
             </Flex>
diff --git a/src/components/groups/views/forums/GroupForumThreadListView.tsx b/src/components/groups/views/forums/GroupForumThreadListView.tsx
index 5c24ae2..99eda9e 100644
--- a/src/components/groups/views/forums/GroupForumThreadListView.tsx
+++ b/src/components/groups/views/forums/GroupForumThreadListView.tsx
@@ -101,7 +101,7 @@ export const GroupForumThreadListView: FC<GroupForumThreadListViewProps> = props
                         <Button variant="link" className="btn-sm" onClick={ onOpenSettings }>
                             { LocalizeText('groupforum.view.settings.header') }
                         </Button> }
-                    { forumData && forumData.hasPostThreadPermissionError &&
+                    { forumData && forumData.hasReadPermissionError && forumData.hasPostThreadPermissionError &&
                         <Button variant="primary" className="btn-sm" onClick={ onNewThread }>
                             { LocalizeText('messageboard.new.thread.button') }
                         </Button> }
@@ -119,6 +119,16 @@ export const GroupForumThreadListView: FC<GroupForumThreadListViewProps> = props
                         <Text small>{ forumData.totalMessages } { LocalizeText('messageboard.messages') }</Text>
                     </Column>
                 </Flex> }
+            { forumData && !forumData.hasReadPermissionError &&
+                <Flex className="flex-1 p-4" justifyContent="center" alignItems="center">
+                    <Column alignItems="center" gap={ 2 }>
+                        <Text bold>{ LocalizeText('groupforum.view.error.operation_read') }</Text>
+                        <Text small variant="muted">
+                            { LocalizeText('groupforum.view.error.' + forumData.readPermissionError) }
+                        </Text>
+                    </Column>
+                </Flex> }
+            { (!forumData || forumData.hasReadPermissionError) &&
             <Column className="overflow-auto flex-1" gap={ 0 }>
                 { sortedThreads.map((thread, index) =>
                 {
@@ -195,7 +205,7 @@ export const GroupForumThreadListView: FC<GroupForumThreadListViewProps> = props
                             { LocalizeText('groupforum.list.load_more') }
                         </Text>
                     </Flex> }
-            </Column>
+            </Column> }
         </Column>
     );
 };
diff --git a/src/components/groups/views/forums/GroupForumThreadView.tsx b/src/components/groups/views/forums/GroupForumThreadView.tsx
index 8d9ee8c..eabbf60 100644
--- a/src/components/groups/views/forums/GroupForumThreadView.tsx
+++ b/src/components/groups/views/forums/GroupForumThreadView.tsx
@@ -1,4 +1,4 @@
-import { GetMessagesMessageComposer, ModerateMessageMessageComposer, ModerateThreadMessageComposer, PostMessageMessageComposer, PostMessageMessageEvent, PostThreadMessageEvent, ThreadMessagesMessageEvent, UpdateMessageMessageEvent, UpdateThreadMessageComposer, UpdateThreadMessageEvent } from '@nitrots/nitro-renderer';
+import { GetMessagesMessageComposer, ModerateMessageMessageComposer, ModerateThreadMessageComposer, PostMessageMessageComposer, PostMessageMessageEvent, PostThreadMessageEvent, ThreadMessagesMessageEvent, UpdateForumReadMarkerMessageComposer, UpdateForumReadMarkerEntry, UpdateMessageMessageEvent, UpdateThreadMessageComposer, UpdateThreadMessageEvent } from '@nitrots/nitro-renderer';
 import { FC, useCallback, useEffect, useRef, useState } from 'react';
 import { LocalizeText, SendMessageComposer, GetUserProfile } from '../../../../api';
 import { Button, Column, Flex, LayoutAvatarImageView, Text } from '../../../../common';
@@ -49,6 +49,15 @@ export const GroupForumThreadView: FC<GroupForumThreadViewProps> = props =>
         {
             setMessages(prev => [ ...prev, ...parser.messages ]);
         }
+
+        // Mark messages as read
+        if(parser.messages.length > 0)
+        {
+            const lastMessage = parser.messages[parser.messages.length - 1];
+            SendMessageComposer(new UpdateForumReadMarkerMessageComposer(
+                new UpdateForumReadMarkerEntry(effectiveGroupId, lastMessage.messageId, true)
+            ));
+        }
     });
 
     useMessageEvent<PostMessageMessageEvent>(PostMessageMessageEvent, event =>
@@ -153,6 +162,12 @@ export const GroupForumThreadView: FC<GroupForumThreadViewProps> = props =>
         onBack();
     }, [ effectiveGroupId, threadId, onBack ]);
 
+    const deleteThread = useCallback(() =>
+    {
+        SendMessageComposer(new ModerateThreadMessageComposer(effectiveGroupId, threadId, STATE_DELETED_BY_MODERATOR));
+        onBack();
+    }, [ effectiveGroupId, threadId, onBack ]);
+
     const formatTimeAgo = (seconds: number): string =>
     {
         if(seconds < 60) return `${ seconds }s ${ LocalizeText('messageboard.time.ago') }`;
@@ -203,6 +218,9 @@ export const GroupForumThreadView: FC<GroupForumThreadViewProps> = props =>
                         <Button variant="outline-danger" className="btn-sm" onClick={ hideThread }>
                             { LocalizeText('groupforum.thread.hide') }
                         </Button>
+                        <Button variant="danger" className="btn-sm" onClick={ deleteThread }>
+                            { LocalizeText('groupforum.thread.delete') }
+                        </Button>
                     </Flex> }
             </Flex>
             <Column className="overflow-auto flex-1" gap={ 0 }>
@@ -292,6 +310,12 @@ export const GroupForumThreadView: FC<GroupForumThreadViewProps> = props =>
                 <Flex className="p-2 border-t bg-warning bg-opacity-10" justifyContent="center">
                     <Text small variant="muted">{ LocalizeText('groupforum.thread.locked') }</Text>
                 </Flex> }
+            { !canPost && !isLocked && forumData &&
+                <Flex className="p-2 border-t bg-muted" justifyContent="center">
+                    <Text small variant="muted">
+                        { LocalizeText('groupforum.view.error.' + forumData.postMessagePermissionError) }
+                    </Text>
+                </Flex> }
         </Column>
     );
 };
diff --git a/src/components/groups/views/tabs/GroupTabSettingsView.tsx b/src/components/groups/views/tabs/GroupTabSettingsView.tsx
index be92446..d65567f 100644
--- a/src/components/groups/views/tabs/GroupTabSettingsView.tsx
+++ b/src/components/groups/views/tabs/GroupTabSettingsView.tsx
@@ -2,6 +2,7 @@ import { GroupSavePreferencesComposer } from '@nitrots/nitro-renderer';
 import { Dispatch, FC, SetStateAction, useCallback, useEffect, useState } from 'react';
 import { IGroupData, LocalizeText, SendMessageComposer } from '../../../../api';
 import { Flex, HorizontalRule, Text } from '../../../../common';
+import { useNotification } from '../../../../hooks';
 
 const STATES: string[] = [ 'regular', 'exclusive', 'private' ];
 
@@ -17,12 +18,30 @@ export const GroupTabSettingsView: FC<GroupTabSettingsViewProps> = props =>
     const { groupData = null, setGroupData = null, setCloseAction = null } = props;
     const [ groupState, setGroupState ] = useState<number>(groupData.groupState);
     const [ groupDecorate, setGroupDecorate ] = useState<boolean>(groupData.groupCanMembersDecorate);
+    const [ groupForum, setGroupForum ] = useState<boolean>(groupData.groupHasForum ?? false);
+    const { showConfirm = null } = useNotification();
+
+    const handleForumToggle = useCallback(() =>
+    {
+        if(groupForum)
+        {
+            // Disabling forum - show confirmation
+            showConfirm(LocalizeText('group.forum.disable.confirm'), () =>
+            {
+                setGroupForum(false);
+            }, null);
+        }
+        else
+        {
+            setGroupForum(true);
+        }
+    }, [ groupForum, showConfirm ]);
 
     const saveSettings = useCallback(() =>
     {
         if(!groupData) return false;
 
-        if((groupState === groupData.groupState) && (groupDecorate === groupData.groupCanMembersDecorate)) return true;
+        if((groupState === groupData.groupState) && (groupDecorate === groupData.groupCanMembersDecorate) && (groupForum === (groupData.groupHasForum ?? false))) return true;
 
         if(groupData.groupId <= 0)
         {
@@ -32,6 +51,7 @@ export const GroupTabSettingsView: FC<GroupTabSettingsViewProps> = props =>
 
                 newValue.groupState = groupState;
                 newValue.groupCanMembersDecorate = groupDecorate;
+                newValue.groupHasForum = groupForum;
 
                 return newValue;
             });
@@ -39,15 +59,16 @@ export const GroupTabSettingsView: FC<GroupTabSettingsViewProps> = props =>
             return true;
         }
 
-        SendMessageComposer(new GroupSavePreferencesComposer(groupData.groupId, groupState, groupDecorate ? 0 : 1));
+        SendMessageComposer(new GroupSavePreferencesComposer(groupData.groupId, groupState, groupDecorate ? 0 : 1, groupForum));
 
         return true;
-    }, [ groupData, groupState, groupDecorate, setGroupData ]);
+    }, [ groupData, groupState, groupDecorate, groupForum, setGroupData ]);
 
     useEffect(() =>
     {
         setGroupState(groupData.groupState);
         setGroupDecorate(groupData.groupCanMembersDecorate);
+        setGroupForum(groupData.groupHasForum ?? false);
     }, [ groupData ]);
 
     useEffect(() =>
@@ -84,6 +105,14 @@ export const GroupTabSettingsView: FC<GroupTabSettingsViewProps> = props =>
                     <Text>{ LocalizeText('group.edit.settings.rights.members.help') }</Text>
                 </div>
             </div>
+            <HorizontalRule />
+            <div className="flex items-center gap-1">
+                <input checked={ groupForum } className="form-check-input" type="checkbox" onChange={ handleForumToggle } />
+                <div className="flex flex-col gap-1">
+                    <Text bold>{ LocalizeText('group.forum.enable.caption') }</Text>
+                    <Text>{ LocalizeText('group.forum.enable.help') }</Text>
+                </div>
+            </div>
         </div>
     );
 };