diff --git a/server/src/__tests__/chat-channels.integration.test.ts b/server/src/__tests__/chat-channels.integration.test.ts
index 42c82be9669..c66432acfb1 100644
--- a/server/src/__tests__/chat-channels.integration.test.ts
+++ b/server/src/__tests__/chat-channels.integration.test.ts
@@ -4217,6 +4217,16 @@ describeEmbeddedPostgres("chat channel control-plane integration", () => {
         expect(f.provider.mock.calls.filter(([url]) => String(url).endsWith("apps.managedInstall"))).toHaveLength(2);
         expect(f.provider.mock.calls.filter(([url]) => String(url).endsWith("apps.manifest.create"))).toHaveLength(1);
       });
+      it("retains reinstall intent after a provider failure instead of retrying rejected credentials", async () => {
+        const f = await managedFixture(); const scopes = f.state.grantedScopes;
+        f.state.grantedScopes = []; await f.provision();
+        f.state.managedError = "internal_error"; await f.provision();
+        expect((await f.service.get(f.endpoint.id)).setup.slackRegistration).toMatchObject({ status: "install", errorCode: "slack_provider_failure" });
+        f.state.managedError = null; f.state.grantedScopes = scopes; await f.provision();
+        expect((await f.service.get(f.endpoint.id)).setup.slackRegistration?.status).toBe("configured");
+        expect(f.provider.mock.calls.filter(([url]) => String(url).endsWith("apps.managedInstall"))).toHaveLength(3);
+        expect(f.provider.mock.calls.filter(([url]) => String(url).endsWith("apps.manifest.create"))).toHaveLength(1);
+      });
       it("clears a manager reconnect error after renewing the bound grant", async () => {
         const f = await managedFixture(); f.state.managedError = "invalid_auth"; await f.provision();
         expect((await f.service.get(f.endpoint.id)).setup.slackRegistration?.errorCode).toBe("slack_manager_reauthorize");
diff --git a/server/src/services/connectors/slack/setup/managed.ts b/server/src/services/connectors/slack/setup/managed.ts
index 44e4b67aeb4..6656d43967c 100644
--- a/server/src/services/connectors/slack/setup/managed.ts
+++ b/server/src/services/connectors/slack/setup/managed.ts
@@ -27,6 +27,8 @@ export function createManagedSlackSetup(store: SlackRegistrationStore, grants: R
         await completion.resumeLocked(endpointId, actor, lease);
         return;
       }
+      // Keep reinstall intent durable even if this dispatch fails or the process exits.
+      if (needsReinstall) await store.setFailure(row, "install", row.errorCode!, lease);
       const { grant } = await grants.token(input.grantId, row.companyId, actor);
       try {
         await lease.assertOwned();
@@ -41,7 +43,7 @@ export function createManagedSlackSetup(store: SlackRegistrationStore, grants: R
       } catch (error) {
         const code = object(object(error).details).code;
         const safe = typeof code === "string" ? code : "slack_install_failed";
-        await store.setFailure(row, row.status, safe, lease);
+        await store.setFailure(row, needsReinstall ? "install" : row.status, safe, lease);
         await store.audit(row, actor, "installation_failed", safe);
         fallback = ["slack_approval_required", "slack_approval_pending", "slack_approval_denied"].includes(safe);
         return;