diff --git a/conversejs/builtin.ts b/conversejs/builtin.ts
index dd58f2fd..9b4919d2 100644
--- a/conversejs/builtin.ts
+++ b/conversejs/builtin.ts
@@ -113,7 +113,8 @@ async function initConverse (
       remoteRoomAnonymousParams(initConverseParams, auth, params)
       isRemoteWithNicknameSet = true
     } else {
-      throw new Error('Remote server does not allow remote connection')
+      console.error('Remote server does not allow remote connection')
+      params.jid = null
     }
   } else {
     if (!isRemoteChat) {
@@ -121,7 +122,21 @@ async function initConverse (
     } else if (remoteAnonymousXMPPServer) {
       remoteRoomAnonymousParams(initConverseParams, null, params)
     } else {
-      throw new Error('Remote server does not allow remote connection')
+      console.error('Remote server does not allow remote connection')
+      params.jid = null
+    }
+  }
+
+  if (params.jid === null) {
+    if (chatIncludeMode === 'chat-only') {
+      // Special use case: when mode=chat-only, and no params.jid: display an error page.
+      // Note: this can happen if anonymous users are not allowed on the server.
+      console.error('Seems that anonymous users are not allowed on the target server')
+      // FIXME: localize?
+      document.body.innerHTML = '<h1>This chatroom does not exist, or is not accessible to you.</h1>'
+      return
+    } else {
+      throw new Error('Can\'t connect, no JID')
     }
   }
 
diff --git a/server/lib/conversejs/params.ts b/server/lib/conversejs/params.ts
index ed48595d..16cb850c 100644
--- a/server/lib/conversejs/params.ts
+++ b/server/lib/conversejs/params.ts
@@ -80,7 +80,7 @@ async function getConverseJSParams (
     staticBaseUrl,
     assetsPath: staticBaseUrl + 'conversejs/',
     isRemoteChat: !!(roomInfos.video?.remote),
-    localAnonymousJID: localAnonymousJID,
+    localAnonymousJID: !settings['chat-no-anonymous'] ? localAnonymousJID : null,
     remoteAnonymousJID: remoteConnectionInfos?.anonymous?.userJID ?? null,
     remoteAnonymousXMPPServer: !!(remoteConnectionInfos?.anonymous),
     remoteAuthenticatedXMPPServer: !!(remoteConnectionInfos?.authenticated),
diff --git a/shared/lib/types.ts b/shared/lib/types.ts
index 3cd72591..1b94be23 100644
--- a/shared/lib/types.ts
+++ b/shared/lib/types.ts
@@ -2,7 +2,7 @@ type ConverseJSTheme = 'peertube' | 'default' | 'concord'
 
 interface InitConverseJSParams {
   isRemoteChat: boolean
-  localAnonymousJID: string
+  localAnonymousJID: string | null
   remoteAnonymousJID: string | null
   remoteAnonymousXMPPServer: boolean
   remoteAuthenticatedXMPPServer: boolean