Cinema 4D Sign In OK, Waiting for Maxon App

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Workaround available Windows, macOS Updated November 14, 2026Based on 3 user reportsHow we research

Quick answer

Cinema 4D or the Maxon App stalls after a successful login, usually because a firewall or security software blocks Maxon services. Allowing Maxon in your security software and reinstalling the Maxon App usually clears it.

Most likely fix: Allow Maxon in your security software

How to fix it

Try these in order — the most common fix is first.

  1. 1. Allow Maxon in your security software

    1. Open your firewall or antivirus settings
    2. Allow Maxon, the Maxon App and Red Giant services through
    3. Restart the Maxon App and sign in again
    Did this fix it?
  2. 2. Check the account and license assignment

    1. Sign in at my.maxon.net in a browser
    2. Confirm the license is on the same account you use in the Maxon App
    3. Make sure it is assigned to this computer
    Did this fix it?
  3. 3. Reinstall the latest Maxon App

    1. Uninstall the Maxon App
    2. Download the newest version from maxon.net
    3. Install it and sign in
    Did this fix it?
  4. 4. Contact Maxon with logs

    1. Create error logs from the Maxon App
    2. Open a ticket at the Maxon support center and attach them
    Did this fix it?

Symptoms

The Maxon App shows 'Sign In OK, Waiting For Maxon App' (or 'Login failed') and never finishes; Cinema 4D will not start with a license.

Why it happens

  • Firewall, antivirus or other security software blocking Maxon, Maxon App or Red Giant services
  • Signed in with a different Maxon account than the one holding the license
  • License released or not assigned to this computer
  • Outdated Maxon App

This guide also covers

  • sign in ok waiting for maxon app
  • maxon app login failed
  • maxon app not working

Still not working?

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