diff --git a/ElementX/Sources/Screens/JoinRoomScreen/JoinRoomScreenModels.swift b/ElementX/Sources/Screens/JoinRoomScreen/JoinRoomScreenModels.swift
index d712bf4478..a29f63aac1 100644
--- a/ElementX/Sources/Screens/JoinRoomScreen/JoinRoomScreenModels.swift
+++ b/ElementX/Sources/Screens/JoinRoomScreen/JoinRoomScreenModels.swift
@@ -43,6 +43,14 @@ struct JoinRoomScreenViewState: BindableState {
         roomDetails?.name ?? L10n.screenJoinRoomTitleNoPreview
     }
     
+    var subtitle: String? {
+        switch mode {
+        case .loading: nil
+        case .unknown: L10n.screenJoinRoomSubtitleNoPreview
+        case .invited, .join, .knock: roomDetails?.canonicalAlias
+        }
+    }
+    
     var avatar: RoomAvatar {
         .room(id: roomID, name: title, avatarURL: roomDetails?.avatarURL)
     }
diff --git a/ElementX/Sources/Screens/JoinRoomScreen/JoinRoomScreenViewModel.swift b/ElementX/Sources/Screens/JoinRoomScreen/JoinRoomScreenViewModel.swift
index 78b41cfbe7..8000b19960 100644
--- a/ElementX/Sources/Screens/JoinRoomScreen/JoinRoomScreenViewModel.swift
+++ b/ElementX/Sources/Screens/JoinRoomScreen/JoinRoomScreenViewModel.swift
@@ -22,6 +22,7 @@ typealias JoinRoomScreenViewModelType = StateStoreViewModel<JoinRoomScreenViewSt
 class JoinRoomScreenViewModel: JoinRoomScreenViewModelType, JoinRoomScreenViewModelProtocol {
     private let roomID: String
     private let via: [String]
+    private let allowKnocking: Bool // For preview tests only, actions aren't sent.
     private let clientProxy: ClientProxyProtocol
     private let userIndicatorController: UserIndicatorControllerProtocol
     
@@ -32,11 +33,13 @@ class JoinRoomScreenViewModel: JoinRoomScreenViewModelType, JoinRoomScreenViewMo
 
     init(roomID: String,
          via: [String],
+         allowKnocking: Bool = false,
          clientProxy: ClientProxyProtocol,
          mediaProvider: MediaProviderProtocol,
          userIndicatorController: UserIndicatorControllerProtocol) {
         self.roomID = roomID
         self.via = via
+        self.allowKnocking = allowKnocking
         self.clientProxy = clientProxy
         self.userIndicatorController = userIndicatorController
         
@@ -81,6 +84,8 @@ class JoinRoomScreenViewModel: JoinRoomScreenViewModelType, JoinRoomScreenViewMo
         switch await clientProxy.roomPreviewForIdentifier(roomID, via: via) {
         case .success(let roomDetails):
             state.roomDetails = roomDetails
+        case .failure(.roomPreviewIsPrivate):
+            break // Handled by the mode, we don't need an error indicator.
         case .failure:
             userIndicatorController.submitIndicator(UserIndicator(title: L10n.errorUnknown))
         }
@@ -96,8 +101,8 @@ class JoinRoomScreenViewModel: JoinRoomScreenViewModelType, JoinRoomScreenViewMo
             state.mode = .join
         } else if roomDetails.isInvited {
             state.mode = .invited
-        } else if roomDetails.canKnock { // Knocking is not supported yet, treat it as .unknown
-            state.mode = .unknown
+        } else if roomDetails.canKnock, allowKnocking { // Knocking is not supported yet, the flag is purely for preview tests.
+            state.mode = .knock
         } else {
             state.mode = .unknown
         }
diff --git a/ElementX/Sources/Screens/JoinRoomScreen/View/JoinRoomScreen.swift b/ElementX/Sources/Screens/JoinRoomScreen/View/JoinRoomScreen.swift
index bedf659dd3..9029508bc6 100644
--- a/ElementX/Sources/Screens/JoinRoomScreen/View/JoinRoomScreen.swift
+++ b/ElementX/Sources/Screens/JoinRoomScreen/View/JoinRoomScreen.swift
@@ -51,10 +51,11 @@ struct JoinRoomScreen: View {
                     .foregroundStyle(.compound.textPrimary)
                     .multilineTextAlignment(.center)
                 
-                if let alias = context.viewState.roomDetails?.canonicalAlias {
-                    Text(alias)
+                if let subtitle = context.viewState.subtitle {
+                    Text(subtitle)
                         .font(.compound.bodyMD)
                         .foregroundStyle(.compound.textSecondary)
+                        .multilineTextAlignment(.center)
                 }
                 
                 if let memberCount = context.viewState.roomDetails?.memberCount {
@@ -168,6 +169,7 @@ struct JoinRoomScreen_Previews: PreviewProvider, TestablePreview {
         
         return JoinRoomScreenViewModel(roomID: "1",
                                        via: [],
+                                       allowKnocking: true,
                                        clientProxy: clientProxy,
                                        mediaProvider: MockMediaProvider(),
                                        userIndicatorController: ServiceLocator.shared.userIndicatorController)
diff --git a/ElementX/Sources/Services/Client/ClientProxy.swift b/ElementX/Sources/Services/Client/ClientProxy.swift
index 51457809c3..5d5a6ab235 100644
--- a/ElementX/Sources/Services/Client/ClientProxy.swift
+++ b/ElementX/Sources/Services/Client/ClientProxy.swift
@@ -481,6 +481,8 @@ class ClientProxy: ClientProxyProtocol {
         do {
             let roomPreview = try await client.getRoomPreviewFromRoomId(roomId: identifier, viaServers: via)
             return .success(.init(roomPreview))
+        } catch let error as ClientError where error.code == .forbidden {
+            return .failure(.roomPreviewIsPrivate)
         } catch {
             MXLog.error("Failed retrieving preview for room: \(identifier) with error: \(error)")
             return .failure(.sdkError(error))
diff --git a/ElementX/Sources/Services/Client/ClientProxyProtocol.swift b/ElementX/Sources/Services/Client/ClientProxyProtocol.swift
index fbe7960a37..70eba486c9 100644
--- a/ElementX/Sources/Services/Client/ClientProxyProtocol.swift
+++ b/ElementX/Sources/Services/Client/ClientProxyProtocol.swift
@@ -43,6 +43,7 @@ enum ClientProxyError: Error {
     case invalidMedia
     case invalidUserIDServerName
     case failedUploadingMedia(Error, MatrixErrorCode)
+    case roomPreviewIsPrivate
 }
 
 enum SlidingSyncConstants {
diff --git a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-en-GB.Invite.png b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-en-GB.Invite.png
index 94bea8b4f7..57f5cd7ef8 100644
--- a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-en-GB.Invite.png
+++ b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-en-GB.Invite.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:2e66eb9d53892d4849c24958504b80a47029b242d19d37750eda9e92be99f16a
-size 1980877
+oid sha256:ff22a5528ff2c3df3d16f8340919a8b31117603d374db7531d26021c774d3512
+size 1980756
diff --git a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-en-GB.Join.png b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-en-GB.Join.png
index 42761e7bce..e33772658b 100644
--- a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-en-GB.Join.png
+++ b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-en-GB.Join.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:84719756861fed326f1b076a63e9229a3d725da98342a3f31d00e8614865537e
-size 1944887
+oid sha256:656011b2f47a26f568bf84df3ccd5c14281722a9102bf8b3b79b714c22c26b21
+size 1944766
diff --git a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-en-GB.Knock.png b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-en-GB.Knock.png
index 4844224d0e..a193b68889 100644
--- a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-en-GB.Knock.png
+++ b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-en-GB.Knock.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:12fcce0c1ecfe6a4cf327fc1bc1392df9645e1598e9f198b19ac6f5d0fa6ea7e
-size 2004327
+oid sha256:29ba90bb910486c5aba146e7f6692975d76adbde4c7aa291ada4164291726848
+size 1936891
diff --git a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-en-GB.Unknown.png b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-en-GB.Unknown.png
index 0da71bd56c..6ff8f3f953 100644
--- a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-en-GB.Unknown.png
+++ b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-en-GB.Unknown.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:7eb5aca42879ec370564b491fe57faf286d479a4aa02566e6fa681004f322a7a
-size 1953618
+oid sha256:a0b850d16e626197c8ce12f6b6467284adefaf19295b2c75deb13599bda4796f
+size 1963867
diff --git a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-pseudo.Invite.png b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-pseudo.Invite.png
index 2db70cd0c2..31bc3567e3 100644
--- a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-pseudo.Invite.png
+++ b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-pseudo.Invite.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:2f249e7835423b71f8b5920def18070ba55875b2edc43898662e00d4780b9bc1
-size 1983443
+oid sha256:0cfe8c8a252ff738c7f630d083e5da55717027c01b21bf7c296346516fcc4650
+size 1983322
diff --git a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-pseudo.Join.png b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-pseudo.Join.png
index 325cf0ecf5..c2734a93a1 100644
--- a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-pseudo.Join.png
+++ b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-pseudo.Join.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:d17a5a65a74b86c36e84246a0c7dabaf646e7c0df3990b8c85b3699bca3241cf
-size 1946578
+oid sha256:c091decb9974de8d19b018e19285428fc5c5ee13c4706347c08b1338724db372
+size 1946457
diff --git a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-pseudo.Knock.png b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-pseudo.Knock.png
index 4844224d0e..f31e44885c 100644
--- a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-pseudo.Knock.png
+++ b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-pseudo.Knock.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:12fcce0c1ecfe6a4cf327fc1bc1392df9645e1598e9f198b19ac6f5d0fa6ea7e
-size 2004327
+oid sha256:de02b3401e0343c7784e8b29f8a255c4eafaf47574f55fdf518cf3578cd966a5
+size 1938644
diff --git a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-pseudo.Unknown.png b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-pseudo.Unknown.png
index 9691cb2567..d52f6a7243 100644
--- a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-pseudo.Unknown.png
+++ b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPad-pseudo.Unknown.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:74c93b3fc3f013c500294c67cd801a6bec14b184dfac231c176ffc5b2b48158e
-size 1957146
+oid sha256:b3cb6c41cb549203b7bae407d7dd9bc11381a1f15087d148dd067dbaab819e75
+size 1977775
diff --git a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPhone-15-en-GB.Invite.png b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPhone-15-en-GB.Invite.png
index 2b671c1ef0..d24a6db3fc 100644
--- a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPhone-15-en-GB.Invite.png
+++ b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPhone-15-en-GB.Invite.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:60a7304bba6808b92b41a36a83c8a9989ba676b893da7d2afec9dbc5e085c59f
-size 818315
+oid sha256:f3ebfa2fc96c65b8652344cb46cf33f3c546f3f84e74d8b3403be8aebccb9972
+size 818046
diff --git a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPhone-15-en-GB.Join.png b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPhone-15-en-GB.Join.png
index 8344d592c5..73f82631be 100644
--- a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPhone-15-en-GB.Join.png
+++ b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPhone-15-en-GB.Join.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:64419b0af6a9d4e89d8cfd5e610f69c744301088eb9f281fa72bb794d799c77c
-size 796935
+oid sha256:f08cb674179dc0ad5765865043e1d93dc5f9612669e15c702b8c7121cbe110d7
+size 796666
diff --git a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPhone-15-en-GB.Knock.png b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPhone-15-en-GB.Knock.png
index bbc274be97..d83d9d41d4 100644
--- a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPhone-15-en-GB.Knock.png
+++ b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPhone-15-en-GB.Knock.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:576d5682c28ac13292d982b540c4cdd9753645bd7469d7085d0de28569a1654c
-size 829540
+oid sha256:5ef205a1f5a1756ba3f89b8c0dd2dcfccb39da7e5bc1e72abd90fd2a3d803812
+size 791829
diff --git a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPhone-15-pseudo.Invite.png b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPhone-15-pseudo.Invite.png
index 45ff672d15..3eb0b72518 100644
--- a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPhone-15-pseudo.Invite.png
+++ b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPhone-15-pseudo.Invite.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:8fe3c40f41cd97a62e3bc8a1054e875becaeffc5279a55d422c419464ef6ec55
-size 820702
+oid sha256:58a83d3709c4e7d6ac704ebb46b400e4127e97b91d7a13e5a5c0ab45df214827
+size 820433
diff --git a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPhone-15-pseudo.Join.png b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPhone-15-pseudo.Join.png
index 482d1666d1..1aaa9604dc 100644
--- a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPhone-15-pseudo.Join.png
+++ b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPhone-15-pseudo.Join.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:660601c6904b98270312dadbfc9e3d14aedb66e00fc6ce6f552cd4419436720e
-size 798700
+oid sha256:24751938068a6a8a711d083640911f0b0d0a7a2d46e9c0cb649804a89e850e88
+size 798431
diff --git a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPhone-15-pseudo.Knock.png b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPhone-15-pseudo.Knock.png
index bbc274be97..c714c94212 100644
--- a/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPhone-15-pseudo.Knock.png
+++ b/PreviewTests/__Snapshots__/PreviewTests/test_joinRoomScreen-iPhone-15-pseudo.Knock.png
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:576d5682c28ac13292d982b540c4cdd9753645bd7469d7085d0de28569a1654c
-size 829540
+oid sha256:4e8df72dbca5c057ce933d2602d5e29350a3af0e79f6c1431b6cee897030e56d
+size 793487