Can not write MQTT Engine’s Tag

[deon.korb]

This sounds familiar. Check the versions.

MQTT Engine Custom Namespace Not Writeable

My MQTT Engine namespaces seem to suddenly not be writeable anymore. This was working. The writeable option is definitely ticked: [image] The AccessRights on the MQTT Engine tag provider seems to be Read_Write: [image] Writing to it (either directly or via reference tag) always produces this: [image] I have upgraded to 8.1.17 and MQTT Engine v 4.0.11 in hopes of solving this, but no change. I use a change script on a reference tag to do the actual MQTT publish, but the script isn’t exec…