diff --git a/website/client/src/components/admin-panel/user-support/privilegesAndGems.vue b/website/client/src/components/admin-panel/user-support/privilegesAndGems.vue
index 9de6873469..69f12a64e3 100644
--- a/website/client/src/components/admin-panel/user-support/privilegesAndGems.vue
+++ b/website/client/src/components/admin-panel/user-support/privilegesAndGems.vue
@@ -40,6 +40,11 @@
               v-model="hero.auth.blocked"
               type="checkbox"
             > Ban / Block
+            <p>
+              <small>
+                Banning a user also auto-hides all their guild posts.
+              </small>
+            </p>
           </label>
         </div>
         <div class="form-inline">
diff --git a/website/client/src/components/userMenu/profile.vue b/website/client/src/components/userMenu/profile.vue
index b270d6cf69..e577ee85f4 100644
--- a/website/client/src/components/userMenu/profile.vue
+++ b/website/client/src/components/userMenu/profile.vue
@@ -1028,9 +1028,10 @@ export default {
       this.$store.dispatch('hall:updateHero', { heroDetails: this.hero });
     },
     adminBlockUser () {
-      this.hero.auth.blocked = true;
-
-      this.$store.dispatch('hall:updateHero', { heroDetails: this.hero });
+      if (window.confirm('Ban user and auto-hide all posts?')) {
+        this.hero.auth.blocked = true;
+        this.$store.dispatch('hall:updateHero', { heroDetails: this.hero });
+      }
     },
     adminUnblockUser () {
       this.hero.auth.blocked = false;
diff --git a/website/server/controllers/api-v3/hall.js b/website/server/controllers/api-v3/hall.js
index ba9310bef8..6140a37ac1 100644
--- a/website/server/controllers/api-v3/hall.js
+++ b/website/server/controllers/api-v3/hall.js
@@ -9,6 +9,7 @@ import {
   NotFound,
 } from '../../libs/errors';
 import apiError from '../../libs/apiError';
+import { flagAllMessages } from '../../libs/chat/group-chat';
 import {
   validateItemPath,
   castItemVal,
@@ -336,6 +337,7 @@ api.updateHero = {
     if (updateData.auth && updateData.auth.blocked === true) {
       hero.auth.blocked = updateData.auth.blocked;
       hero.preferences.sleep = true; // when blocking, have them rest at an inn to prevent damage
+      await flagAllMessages(hero);
     }
     if (updateData.auth && updateData.auth.blocked === false) {
       hero.auth.blocked = false;
diff --git a/website/server/libs/chat/group-chat.js b/website/server/libs/chat/group-chat.js
index dc6b0d8278..5acad5855c 100644
--- a/website/server/libs/chat/group-chat.js
+++ b/website/server/libs/chat/group-chat.js
@@ -114,3 +114,9 @@ export function translateMessage (lang, info) {
   }
   return msg;
 }
+
+export async function flagAllMessages (user) {
+  const bulk = Chat.collection.initializeOrderedBulkOp();
+  bulk.find({ uuid: user._id }).update({ $set: { flagCount: 3 } });
+  await bulk.execute();
+}