diff --git a/extensions/matrix/src/matrix/monitor/index.test.ts b/extensions/matrix/src/matrix/monitor/index.test.ts
index f581861f232..7779b16a9d6 100644
--- a/extensions/matrix/src/matrix/monitor/index.test.ts
+++ b/extensions/matrix/src/matrix/monitor/index.test.ts
@@ -6,6 +6,9 @@ import type { MatrixRoomInfo } from "./room-info.js";
 
 type DirectRoomTrackerOptions = {
   canPromoteRecentInvite?: (roomId: string) => boolean | Promise<boolean>;
+  shouldKeepLocallyPromotedDirectRoom?:
+    | ((roomId: string) => boolean | undefined | Promise<boolean | undefined>)
+    | undefined;
 };
 
 const hoisted = vi.hoisted(() => {
@@ -555,6 +558,25 @@ describe("monitorMatrixProvider", () => {
 
     await expect(trackerOpts.canPromoteRecentInvite("!room:example.org")).resolves.toBe(false);
   });
+
+  it("treats unresolved room metadata as indeterminate for local promotion revalidation", async () => {
+    await startMonitorAndAbortAfterStartup();
+
+    const trackerOpts = hoisted.createDirectRoomTracker.mock.calls[0]?.[1];
+    if (!trackerOpts?.shouldKeepLocallyPromotedDirectRoom) {
+      throw new Error("local promotion revalidation callback was not wired");
+    }
+
+    hoisted.getRoomInfo.mockResolvedValueOnce({
+      altAliases: [],
+      nameResolved: false,
+      aliasesResolved: false,
+    });
+
+    await expect(
+      trackerOpts.shouldKeepLocallyPromotedDirectRoom("!room:example.org"),
+    ).resolves.toBeUndefined();
+  });
 });
 
 describe("matrix plugin registration", () => {
diff --git a/extensions/matrix/src/matrix/monitor/index.ts b/extensions/matrix/src/matrix/monitor/index.ts
index 5b850369ee5..b0dae1cddc1 100644
--- a/extensions/matrix/src/matrix/monitor/index.ts
+++ b/extensions/matrix/src/matrix/monitor/index.ts
@@ -226,9 +226,13 @@ export async function monitorMatrixProvider(opts: MonitorMatrixOpts = {}): Promi
       }),
     shouldKeepLocallyPromotedDirectRoom: async (roomId) => {
       try {
+        const roomInfo = await getRoomInfo(roomId, { includeAliases: true });
+        if (!roomInfo.nameResolved || !roomInfo.aliasesResolved) {
+          return undefined;
+        }
         return shouldPromoteRecentInviteRoom({
           roomId,
-          roomInfo: await getRoomInfo(roomId, { includeAliases: true }),
+          roomInfo,
           rooms: roomsConfig,
         });
       } catch (err) {