Viessmann Bridge can not initialize any more SmartHome/J

[rebell21 (peter walber)]

Since a few months I access my Viessmann heating using a bridge and a few things with SmartHome/J Viessmann. This worked fine for a few months. Since a few days my bridge is offline and can not initialize any more. When the bridge tries to initialize the fowlloing happens (copied from the log viewer in debug mode)

Log Details

    Message
    Initialize Viessmann Accountservice 

    Message
    API: Creating OAuth Client Service for viessmann:bridge:80b80b0d3b 

    Message
    ViessmannAuth: State is NEED_AUTH: Executing step: 'authorize' 

    Message
    ExecutionException on call to Viessmann authorization API 

    Message
    ViessmannAuth: Got null authorize response from Viessmann API 

I use the SmartHome/J Binding because the normal Viessmann Binding did not work anymore after I upgraded from Openhab 4 to Openhab 5. I deleted all things and bridges linked to the old viessmann Binding and installed SmartHome/J. But now smartHome/J stopped working

I dont’t know where to configure the access URL in SmartHome/J . I have heard from an other openhab user that Viessmann has changed to access URL from https://iam.viessmann.com/idp/v3/token to

https://iam.viessmann-climatesolutions.com/idp/v3/token

Where can I configure the access URL in SmartHome/J?

[sven1234 (Sven)]

The smartphone/j Viessmann Binding ist probably outdated and you have to move to the maintained version from the same author.

Viessmann Binding [5.0.0;5.9.0)

[logo] This binding connects Viessmann Devices via the new Viessmann API. It provides features like the ViCare-App. Changeling Version 5.1.0.202511200020 Add support for heat energy and current Version 5.1.0.202511161327 Fix ´One Time Charge´ Version 5.1.0.202510202037 Fix ´heating-burners-0-statistics#hours, heating-circuits-0-heating-curve#shift, heating-circuits-0-heating-curve#slope` Version 5.1.0.202510190605 Add unit ´kilowatt´ Add unit ´revolutionsPerSecond´ Version 5.1.0.20250…

However, currently it seems that Viessmann hast an issue on the server side.

[rebell21 (peter walber)]

these are two different bindings

I currently use

  SmartHome/J viessmann

The other binding is the

 Viessmann Binding

I migrated all my things and items half a year ago from the Viessmann Binding to the SmartHome/J viessmann Binding, bec. the Viessmann Binding did not work anymore after my upgrade to openhab 5.0.1. The migration to the SmartHome/J Binding was a larger effort.

[sven1234 (Sven)]

Since it is from the same author, there is an automatic upgrade path for the things, if you do not use an items file.