Marcs Updater

There have been some reports about issues with the Updater not updating anymore. Please try the latest beta version and switch to another IP Check provider instead of the previous default dnsomatic.com. For some reason they are rate-limiting the number of requests to their service. The new IP Check provider selection allows you to choose another provider in such cases. You can test the functionality with the new "Test" panel.

If you want to add a custom provider to the unstable testing version, store a JSON file like the following under %PROGRAMDATA%\Marcs Updater\ServiceProviders\dyndns.json:

    "name": "DynDNS.org (Test)",
    "endpoint": "https://members.dyndns.org/nic/update",
    "method": "GET",
    "queryString": "hostname={HOSTNAME}&myip={MYIP}",
    "dataPayload": "",
    "defaults": {
        "username": "test",
        "password": "test",
        "hostname": "test1.customtest.dyndns.org"

Supported query and payload tags are {USERNAME}, {PASSWORD}, {HOSTNAME} and {MYIP}. Restart the background service and foreground application to apply any changes.

Marcs Updater

Free dynamic DNS updater application for Windows

Download Stable Release


Your router does not support the service providers DNS-O-Matic, DynDNS, No-IP, OpenDNS, selfhost.de, spDNS (medical-it-services.de) or STRATO by default, or is limited in the number of dynamic DNS providers?

You can use this simple client to send IP changes to your dynamic DNS account automatically.

Marcs Updater is built for Windows and runs under Windows XP SP3 or newer.


  • Always running as background Windows service.
  • System tray notifications can be deactivated.
  • Supported and tested on Windows XP SP3 or newer.
  • Native 32-bit and 64-bit application.
  • Always using SSL/TLS (WinHTTP) for updates and other HTTP requests.


  1. Download the installer.
  2. Install the downloaded application.
  3. Put in your login credentials.
  4. Save settings by clicking 'OK'.

Simple settings dialog

Simple settings dialog for quick and easy setup.

Local network filtering

Advanced network filtering based upon DHCP server.

Wireless network filtering

Advanced network filtering based upon wireless SSID.