diff --git a/site/src/api/queries/externalAuth.ts b/site/src/api/queries/externalAuth.ts
index 310df8ac95c38..6782c5d91c699 100644
--- a/site/src/api/queries/externalAuth.ts
+++ b/site/src/api/queries/externalAuth.ts
@@ -42,8 +42,14 @@ export const validateExternalAuth = (
 ): UseMutationOptions<ExternalAuth, unknown, string> => {
 	return {
 		mutationFn: API.getExternalAuthProvider,
-		onSuccess: (data, providerId) => {
+		onSuccess: async (data, providerId) => {
 			queryClient.setQueryData(["external-auth", providerId], data);
+			// The list query is the only source of validate_error, so refetch it
+			// to clear a stale error captured at page load.
+			await queryClient.invalidateQueries({
+				queryKey: ["external-auth"],
+				exact: true,
+			});
 		},
 	};
 };
diff --git a/site/src/pages/UserSettingsPage/ExternalAuthPage/ExternalAuthPage.test.tsx b/site/src/pages/UserSettingsPage/ExternalAuthPage/ExternalAuthPage.test.tsx
new file mode 100644
index 0000000000000..1200f98a86593
--- /dev/null
+++ b/site/src/pages/UserSettingsPage/ExternalAuthPage/ExternalAuthPage.test.tsx
@@ -0,0 +1,100 @@
+import { screen, waitFor } from "@testing-library/react";
+import userEvent from "@testing-library/user-event";
+import { HttpResponse, http } from "msw";
+import type {
+	ExternalAuth,
+	ListUserExternalAuthResponse,
+} from "#/api/typesGenerated";
+import {
+	MockGithubAuthLink,
+	MockGithubExternalProvider,
+} from "#/testHelpers/entities";
+import { renderWithAuth } from "#/testHelpers/renderHelpers";
+import { server } from "#/testHelpers/server";
+import ExternalAuthPage from "./ExternalAuthPage";
+
+const validateError = "token failed to validate";
+
+const providerResponse = (authenticated: boolean): ExternalAuth => ({
+	authenticated,
+	device: false,
+	display_name: "GitHub",
+	supports_revocation: false,
+	user: null,
+	app_installable: false,
+	installations: [],
+	app_install_url: "",
+});
+
+const failedLink = {
+	...MockGithubAuthLink,
+	authenticated: false,
+	validate_error: validateError,
+};
+
+describe("ExternalAuthPage", () => {
+	// Regression test: the list query is the only source of validate_error, and
+	// validateExternalAuth used to update only the per-provider query. The stale
+	// error then sat next to the fresh state until a full page reload.
+	it("refetches the list after a successful Test Validate so a stale error clears", async () => {
+		let validated = false;
+		let listRequests = 0;
+
+		server.use(
+			http.get("/api/v2/external-auth", () => {
+				listRequests++;
+				return HttpResponse.json<ListUserExternalAuthResponse>({
+					providers: [MockGithubExternalProvider],
+					links: [validated ? MockGithubAuthLink : failedLink],
+				});
+			}),
+			http.get("/api/v2/external-auth/github", () => {
+				// The first request is the row's own provider query. The next one
+				// is the "Test Validate" mutation, which succeeds.
+				const response = providerResponse(validated);
+				validated = true;
+				return HttpResponse.json(response);
+			}),
+		);
+
+		renderWithAuth(<ExternalAuthPage />);
+		await screen.findByText(validateError, { exact: false });
+
+		const user = userEvent.setup();
+		await user.click(await screen.findByRole("button", { name: "Open menu" }));
+		await user.click(
+			await screen.findByRole("menuitem", { name: /Test Validate/ }),
+		);
+
+		await waitFor(() => {
+			expect(
+				screen.queryByText(validateError, { exact: false }),
+			).not.toBeInTheDocument();
+		});
+		// The list endpoint is hit again by the post-validate invalidation, so
+		// the displayed link reflects current state.
+		expect(listRequests).toBeGreaterThan(1);
+	});
+
+	it("does not render a stale error next to an authenticated row", async () => {
+		server.use(
+			http.get("/api/v2/external-auth", () => {
+				return HttpResponse.json<ListUserExternalAuthResponse>({
+					providers: [MockGithubExternalProvider],
+					links: [failedLink],
+				});
+			}),
+			// The per-provider query validates live and disagrees with the list.
+			http.get("/api/v2/external-auth/github", () => {
+				return HttpResponse.json(providerResponse(true));
+			}),
+		);
+
+		renderWithAuth(<ExternalAuthPage />);
+
+		await screen.findByRole("button", { name: "Authenticated" });
+		expect(
+			screen.queryByText(validateError, { exact: false }),
+		).not.toBeInTheDocument();
+	});
+});
diff --git a/site/src/pages/UserSettingsPage/ExternalAuthPage/ExternalAuthPageView.stories.tsx b/site/src/pages/UserSettingsPage/ExternalAuthPage/ExternalAuthPageView.stories.tsx
index ad318c604b6e5..dcd501ea5dd8b 100644
--- a/site/src/pages/UserSettingsPage/ExternalAuthPage/ExternalAuthPageView.stories.tsx
+++ b/site/src/pages/UserSettingsPage/ExternalAuthPage/ExternalAuthPageView.stories.tsx
@@ -69,6 +69,7 @@ export const Failed: Story = {
 			links: [
 				{
 					...MockGithubAuthLink,
+					authenticated: false,
 					validate_error: "Failed to refresh token",
 				},
 			],
diff --git a/site/src/pages/UserSettingsPage/ExternalAuthPage/ExternalAuthPageView.tsx b/site/src/pages/UserSettingsPage/ExternalAuthPage/ExternalAuthPageView.tsx
index 4f51010ce4bf5..771bda06f3246 100644
--- a/site/src/pages/UserSettingsPage/ExternalAuthPage/ExternalAuthPageView.tsx
+++ b/site/src/pages/UserSettingsPage/ExternalAuthPage/ExternalAuthPageView.tsx
@@ -146,7 +146,7 @@ const ExternalAuthRow: FC<ExternalAuthRowProps> = ({
 							</TooltipContent>
 						</Tooltip>
 					)}
-					{link?.validate_error && (
+					{!authenticated && link?.validate_error && (
 						<span>
 							<span className="pl-[1em] text-content-destructive">Error: </span>
 							{link?.validate_error}