diff --git a/ui-spa/src/common/utils/pollTransferStatus.test.ts b/ui-spa/src/common/utils/pollTransferStatus.test.ts
index 08e18cbae..3d9e5f524 100644
--- a/ui-spa/src/common/utils/pollTransferStatus.test.ts
+++ b/ui-spa/src/common/utils/pollTransferStatus.test.ts
@@ -254,9 +254,9 @@ describe("pollTransferStatus", async () => {
       100,
     );
 
-    // The grace window is 30s of wall-clock. Just before it elapses the loop is
+    // The grace window is 90s of wall-clock. Just before it elapses the loop is
     // still polling and has not surfaced an error.
-    await vi.advanceTimersByTimeAsync(29900);
+    await vi.advanceTimersByTimeAsync(89900);
     expect(handleResponse).to.toHaveBeenCalledTimes(0);
     expect(handleError).to.toHaveBeenCalledTimes(0);
     expect(getTransferStatus).to.toHaveBeenCalled();
@@ -270,7 +270,7 @@ describe("pollTransferStatus", async () => {
 
     // The loop has given up: no further polling and no further errors.
     const callsAfterStop = (getTransferStatus as Mock).mock.calls.length;
-    await vi.advanceTimersByTimeAsync(30000);
+    await vi.advanceTimersByTimeAsync(90000);
     expect(getTransferStatus).to.toHaveBeenCalledTimes(callsAfterStop);
     expect(handleError).to.toHaveBeenCalledTimes(1);
   });
diff --git a/ui-spa/src/common/utils/pollTransferStatus.ts b/ui-spa/src/common/utils/pollTransferStatus.ts
index ebcc877fc..b9223f5e2 100644
--- a/ui-spa/src/common/utils/pollTransferStatus.ts
+++ b/ui-spa/src/common/utils/pollTransferStatus.ts
@@ -14,7 +14,7 @@ const MID_INTERVAL_MS = 3000;
  * instead of polling forever (e.g. an orchestration that failed before the
  * entity was created, or a stale/incorrect transfer ID).
  */
-const NOT_FOUND_GRACE_MS = 30000;
+const NOT_FOUND_GRACE_MS = 90000; // 90s
 
 /**
  * Polls the transfer status endpoint with adaptive backoff until a terminal state is reached