# Camera not working in Mobotix HUB - "License is invalid"

**URL:** <https://community.mobotix.com/t/camera-not-working-in-mobotix-hub-license-is-invalid/10214>\
**Category:** MOBOTIX HUB - Discussion\
**Tags:** troubleshooting\
**Created:** [January 29, 2026, 12:00pm UTC](https://community.mobotix.com/t/camera-not-working-in-mobotix-hub-license-is-invalid/10214 "2026-01-29T12:00:39Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![mihai.gruia](https://avatars.discourse-cdn.com/v4/letter/m/e95f7d/32.png) [@mihai.gruia](https://community.mobotix.com/u/mihai.gruia)\
**Post date:** [January 29, 2026, 12:00pm UTC](https://community.mobotix.com/t/camera-not-working-in-mobotix-hub-license-is-invalid/10214/1 "2026-01-29T12:00:39Z")

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Hello,

After not working for a few days, some video cameras from the video system no longer work in the Mobotix HUB.  
They can be accessed from the web page. The error displayed in Mobotix HUB is “License is invalid”

Please help.

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**Author:** ![Mx-JoergS](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.mobotix.com/mx-joergs/32/10425_2.png) [@Mx-JoergS](https://community.mobotix.com/u/Mx-JoergS)\
**Post date:** [January 30, 2026, 7:45am UTC](https://community.mobotix.com/t/camera-not-working-in-mobotix-hub-license-is-invalid/10214/2 "2026-01-30T07:45:37Z")

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Hello Mihai.gruia

I assume your Hub License has expired (Demo License) or after the grace period the license was not updated.

If you have purchased enough HUB Licenses related to the amount of devices you have connected to your System, please check the License Dialog in the HUB.

 ![image](https://canada1.discourse-cdn.com/flex030/uploads/mobotix/original/2X/3/35fac37901f086b22a978757dbff6bd2c21cf7a4.jpeg)

### Here are the steps how to activate a HUB License (SLC):

> [@MOBOTIX HUB - License activation instructions](https://community.mobotix.com/t/mobotix-hub-license-activation-instructions/9109):
>
> There are 2 ways to activate MxHUB license. Following instructions have been taken from an existing installation. As you can see from the screenshot below, once you click on the node ‘Basics’ \>\> ‘License information’ the system will show you an overview of the license status. Now, to activate the license code you received, just click on the dropdown menu on the bottom, choosing one of the options Online Offline and just follow the steps to the end of the process.

I hope this helps, bye Jörg

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**Author:** ![mihai.gruia](https://avatars.discourse-cdn.com/v4/letter/m/e95f7d/32.png) [@mihai.gruia](https://community.mobotix.com/u/mihai.gruia)\
**Post date:** [January 30, 2026, 8:12am UTC](https://community.mobotix.com/t/camera-not-working-in-mobotix-hub-license-is-invalid/10214/3 "2026-01-30T08:12:01Z")

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![Mobotix hubb](https://canada1.discourse-cdn.com/flex030/uploads/mobotix/original/2X/8/84a2318c8ee336c2797b79f9312206437a145ae3.jpeg)

This is my license .

The system works very well, until a segment of the perimeter has no power supply for a few days. After reconnecting, some of the video cameras stopped connecting, displaying the license error.

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<div class="post-metadata">

**Author:** ![Mx-JoergS](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.mobotix.com/mx-joergs/32/10425_2.png) [@Mx-JoergS](https://community.mobotix.com/u/Mx-JoergS)\
**Post date:** [January 30, 2026, 1:00pm UTC](https://community.mobotix.com/t/camera-not-working-in-mobotix-hub-license-is-invalid/10214/4 "2026-01-30T13:00:20Z")

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Hallo Mihai,

First Idea:

After an unplanned power outage, the system time and/or the license validation may have failed.  
Please verify the **date and time settings** and restart the **Milestone Management Server** service.

In most cases, the license will be valid again after this.  
If the issue persists, the license needs to be **re-activated**.

Second Idea , check the Network connection and DNS function.

if the Error not disappear please open a support ticket at [support@mobotix.com](mailto:support@mobotix.com) and provide the follow infos as described in the follow Community report:

> [@MOBOTIX HUB Support request - Preliminary Information That Is Helpful - EN](https://community.mobotix.com/t/mobotix-hub-support-request-preliminary-information-that-is-helpful-en/9628):
>
> MOBOTIX HUB Support Inquiries In case of errors or unexpected VMS behavior, technical support asks you to provide the following details – please insert your answers under each question: What is the error message (if applicable), and what steps can be taken to reproduce it? When did the error first occur? What troubleshooting steps have you already taken? Is there a workaround currently in place that mitigates the issue? Is this a new implementation? Were any changes or updates made to your sy…