Help center support eXpress

We have collected answers to all the most popular questions to make it easy and convenient for you to use eXpress. If you do not find the answer to your question, please contact our support team.

Clearing App Cache

Clearing App Cache

Clearing App Cache: General Information

The app cache stores chats, contacts, and viewed files. Clearing the cache may help in the following cases:

  1. Free up space on the device: outdated data will be deleted, while relevant data will be reloaded from the server if needed.
  2. Fix errors in the app's internal encrypted storage.
  3. Resolve issues related to login, updates, freezing, or incorrect message status display.
  4. Fix errors in the operation of Smart Apps and other features.

Data is only deleted locally on the device where the cache was cleared. It is not permanently lost and can be reloaded from the server if necessary.


You can clear the cache manually on the device yourself. Alternatively, contact your organization's support team for remote cache clearing via the admin panel.

Clearing Android App Cache

Clearing Cache via Engineering Menu on Android

Cache clearing will be performed without closing the session. In the app:

  1. Select Settings > About.
  2. Tap the app logo repeatedly until the engineering menu opens.
  3. On the DATA tab, tap CLEAR DATABASE.

This button deletes and then reloads chats and contacts from the server.

Clearing Cached Media via Engineering Menu on Android

  1. In the app, select Settings > About.
  2. Tap the app logo repeatedly until the engineering menu opens.
  3. On the DATA tab, tap CLEAR FILES.

This button deletes files in chats that were cached, which helps free up space on the device.

Closing the Session in the App on Android

  1. In the app, open Settings (the button with the avatar at the top).
  2. Tap Close session.

This clears the cache and other data associated with your account locally, after which you will need to log in to the app again.

Clearing App Cache in Android System

  1. Close the app.
  2. On the device, open Settings > Apps.
  3. Find the app.
  4. Select Storage > Clear Storage.

This works like reinstalling the app: the cache and other data are cleared, you are logged out of the session, and you will need to log in to the app again.


If you are on the login screen of the Android app, use this method or reinstall the app. Use this method if your corporate server has OpenID authentication.

Clearing Smart Apps Cache on Android

If you encounter an issue with any Smart App, you may need to clear its cache:

  1. Open Settings > SmartApps Cache.
  2. Clear the cache of a specific Smart App or all Smart Apps at once using the Clear All button.

Clearing Aurora App Cache

Clearing Cache via Engineering Menu on Aurora

Cache clearing will be performed without closing the session:


  1. In the app, select Settings > About.
  2. Tap the app logo repeatedly until the engineering menu opens.
  3. On the DATA tab, tap CLEAR DATABASE.

This button deletes and then reloads chats and contacts from the server.

Clearing Cached Media via Engineering Menu on Aurora

  1. In the app, select Settings > About.
  2. Tap the app logo repeatedly until the engineering menu opens.
  3. On the DATA tab, tap CLEAR FILES.

This button deletes files in chats that were cached, which helps free up space on the device.

Closing the Session in the App on Aurora

  1. In the app, open Settings.
  2. Tap Close session.

This clears the cache and other local data associated with your account, after which you will need to log in to the app again.

Clearing App Cache in Aurora System

To fully clear the cache, reinstall the app.

Clearing iOS & iPadOS App Cache

Closing the Session in the App on iOS/iPadOS

  1. In the app, open Settings (the button with the avatar at the top).
  2. Tap Close session.

This will clear the cache and other local data associated with your account, after which you will need to log in to the app again.

Clearing App Cache in iOS/iPadOS System

To completely clear the cache, reinstall the mobile app:

  1. On your device, open Settings > General > iPhone/iPad Storage.
  2. Find the app and select Delete App.
  3. Download and install the app again from the App Store.

This complete cleanup will:

  • Free up space on your device.
  • Resolve any existing issues with the app's encrypted storage.
Use this method if your corporate server has OpenID authentication.

Clearing Web/Desktop App Cache

Reloading Chat and Contact Cache in Web/Desktop App

While in the app, press Ctrl (Cmd on Mac) + R.


Chats and contacts will be deleted from the device and then reloaded from the server.

Resetting Web/Desktop App State

  1. Open Settings > About.
  2. Click the logo repeatedly until the engineering menu appears.
  3. Click the RESET STATE button.

This button deletes and reloads user information, cache, chats, and contacts from the server.

Closing the Session in Web/Desktop App

  1. Open Settings (avatar button at the top).
  2. Click Close session.

This will clear the cache and local data associated with the account. You will need to log in again.

Clearing Web App Data Through Browser

Complete cache and site data clearing with session logout:

  • Chrome, Chromium, Opera, Vivaldi: settings icon in the address bar > Site settings > Clear data
  • Firefox: lock icon in the address bar > Clear Cookies and Site Data... > Clear
  • Yandex Browser: enter browser://settings/siteData > find web version > Clear

Use this method if you are on the login screen of the web app.

Clearing Web/Desktop App Data Through Developer Console

  1. Press F12 (or Fn+F12 on some laptops)
  2. Go to the Application tab
  3. Select Storage
  4. Check the including third-party cookies box and click Clear site data
  5. While in the app, press Ctrl (Cmd on Mac) + R.

This is an alternative clearing method when on the login screen.
Use this method if your corporate server has OpenID authentication.

Reinstalling Desktop App with Complete Trace Removal

Complete app removal with all local data clearing:

Clearing Cache Remotely by Administrator

An administrator can clear and reload the cache of chats and contacts on user devices through the corporate server admin panel.

Clearing Cache on a Specific User Device

  1. Go to the Users section.
  2. Find the required user.
  3. Open the Activations tab.
  4. Locate the session with the target device.
  5. Click one of the buttons:
    • Clear chats — reloads chats on this device.
    • Clear contacts — reloads contacts on this device.
    • Clear all — removes all local data and closes the session on the device.

Clearing Cache on All User Devices

  1. Go to the Users section.
  2. Find the required user.
  3. Click one of the buttons:
    • Clear cache — reloads chats and contacts on all user devices.
    • Clear all — removes all local data and closes the session on all user devices.

This method is used when the user cannot clear the cache themselves or if doing so does not resolve the issue. No data will be lost — it will be removed locally from the device(s) and can later be reloaded from the server.
Do not use this method if your corporate server has OpenID authentication.

Clearing Smart Apps & Home Screen Cache

Clearing Smart App Cache

  1. Open the desired Smart App.
  2. Tap the three-dot button.
  3. Select Clear Cache.

Clearing Cache of a Non-Functioning Smart App on Android

If the Smart App does not open:

  1. Go to Settings > SmartApps Cache
  2. Choose:
    • Clear cache for a specific Smart App
    • Or tap Clear All for all Smart Apps
This feature is only available in the Android app.

Clearing Home Screen Cache

  • In the mobile app:
    1. Press and hold the “home” button.
    2. Select Clear Cache from the menu.
  • In the web and desktop app:
    1. Click the three-dot button at the top of the Home Screen panel.
    2. Select Clear Cache.