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diff --git a/src/webex/pages/welcome.tsx b/src/webex/pages/welcome.tsx
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+++ b/src/webex/pages/welcome.tsx
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+/*
+ This file is part of GNU Taler
+ (C) 2019 Taler Systems SA
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+/**
+ * Welcome page, shown on first installs.
+ *
+ * @author Florian Dold
+ */
+
+import React, { useState, useEffect } from "react";
+import { getDiagnostics } from "../wxApi";
+import { registerMountPage, PageLink } from "../renderHtml";
+import { WalletDiagnostics } from "../../walletTypes";
+
+function Diagnostics() {
+  const [timedOut, setTimedOut] = useState(false);
+  const [diagnostics, setDiagnostics] = useState<WalletDiagnostics | undefined>(
+    undefined,
+  );
+
+  useEffect(() => {
+    let gotDiagnostics = false;
+    setTimeout(() => {
+      if (!gotDiagnostics) {
+        console.error("timed out");
+        setTimedOut(true);
+      }
+    }, 1000);
+    const doFetch = async () => {
+      const d = await getDiagnostics();
+      console.log("got diagnostics", d);
+      gotDiagnostics = true;
+      setDiagnostics(d);
+    };
+    console.log("fetching diagnostics");
+    doFetch();
+  }, []);
+
+  if (timedOut) {
+    return <p>Diagnostics timed out. Could not talk to the wallet backend.</p>;
+  }
+
+  if (diagnostics) {
+    if (diagnostics.errors.length === 0) {
+      return <p>Running diagnostics ... everything looks fine.</p>;
+    } else {
+      return (
+        <div
+          style={{
+            borderLeft: "0.5em solid red",
+            paddingLeft: "1em",
+            paddingTop: "0.2em",
+            paddingBottom: "0.2em",
+          }}
+        >
+          <p>Problems detected:</p>
+          <ol>
+            {diagnostics.errors.map(errMsg => (
+              <li>{errMsg}</li>
+            ))}
+          </ol>
+          {diagnostics.firefoxIdbProblem ? (
+            <p>
+              Please check in your <code>about:config</code> settings that you
+              have IndexedDB enabled (check the preference name{" "}
+              <code>dom.indexedDB.enabled</code>).
+            </p>
+          ) : null}
+          {diagnostics.dbOutdated ? (
+            <p>
+              Your wallet database is outdated. Currently automatic migration is
+              not supported. Please go{" "}
+              <PageLink pageName="reset-required.html">here</PageLink> to reset
+              the wallet database.
+            </p>
+          ) : null}
+        </div>
+      );
+    }
+  }
+
+  return <p>Running diagnostics ...</p>;
+}
+
+function Welcome() {
+  return (
+    <>
+      <p>Thank you for installing the wallet.</p>
+      <h2>First Steps</h2>
+      <p>
+        Check out <a href="https://demo.taler.net/">demo.taler.net</a> for a
+        demo.
+      </p>
+      <h2>Troubleshooting</h2>
+      <Diagnostics />
+    </>
+  );
+}
+
+registerMountPage(() => <Welcome />);