diff --git a/keyserver/src/keyserver.js b/keyserver/src/keyserver.js
--- a/keyserver/src/keyserver.js
+++ b/keyserver/src/keyserver.js
@@ -41,6 +41,7 @@
   multimediaUploadResponder,
   uploadDownloadResponder,
 } from './uploads/uploads.js';
+import { createAuthoritativeKeyserverConfigFiles } from './user/create-configs.js';
 import { verifyUserLoggedIn } from './user/login.js';
 import { initENSCache } from './utils/ens-cache.js';
 import { getContentSigningKey } from './utils/olm-utils.js';
@@ -106,6 +107,9 @@
       ignorePromiseRejections(
         createAndMaintainTunnelbrokerWebsocket(identityInfo),
       );
+      if (process.env.NODE_ENV === 'development') {
+        await createAuthoritativeKeyserverConfigFiles(identityInfo.userId);
+      }
     } catch (e) {
       console.warn(
         'Failed identity login. Login optional until staging environment is available',
diff --git a/keyserver/src/user/create-configs.js b/keyserver/src/user/create-configs.js
new file mode 100644
--- /dev/null
+++ b/keyserver/src/user/create-configs.js
@@ -0,0 +1,72 @@
+// @flow
+
+import fs from 'fs';
+
+import { getCommConfig } from 'lib/utils/comm-config.js';
+
+import type { UserCredentials } from './checks.js';
+
+async function createFile(path: string, name: string, data: string) {
+  const filePath = `${path}/${name}`;
+
+  try {
+    await fs.promises.mkdir(path);
+  } catch (e) {
+    if (e.code !== 'EEXIST') {
+      throw e;
+    }
+  }
+  await fs.promises.writeFile(filePath, data);
+}
+
+async function createAuthoritativeKeyserverConfigFiles(userID: string) {
+  const userInfo = await getCommConfig<UserCredentials>({
+    folder: 'secrets',
+    name: 'user_credentials',
+  });
+
+  if (!userInfo?.usingIdentityCredentials) {
+    // If the keyserver is not set up to use its identity id,
+    // we will also not set up the clients to use the keyservers real id
+    return;
+  }
+
+  try {
+    const authoritativeKeyserver = {
+      authoritativeKeyserverID: userID,
+    };
+    const authoritativeKeyserverJSON = JSON.stringify(
+      authoritativeKeyserver,
+      null,
+      2,
+    );
+    const authoritativeKeyserverFile = 'authoritative_keyserver.json';
+
+    const nativeFactsFolder = '../native/facts';
+    const nativePromise = createFile(
+      nativeFactsFolder,
+      authoritativeKeyserverFile,
+      authoritativeKeyserverJSON,
+    );
+
+    const keyserverFactsFolder = 'facts';
+    const keyserverPromise = createFile(
+      keyserverFactsFolder,
+      authoritativeKeyserverFile,
+      authoritativeKeyserverJSON,
+    );
+
+    await Promise.all([nativePromise, keyserverPromise]);
+  } catch (e) {
+    // This means that the clients will not be configured to use
+    // the real keyserver id, and will use the default 256.
+    // Try restarting the keyserver or create the files manually
+    console.error(
+      'Failure creating configuration files: ' +
+        'admin data could not be correctly written',
+      e,
+    );
+  }
+}
+
+export { createAuthoritativeKeyserverConfigFiles };