Hello,
My Duplicati ‘v.2.1.0.120_canary_2025-06-24-win-x64-gui’ works well
but it regularly opens a new UI in a new tab in my Chrome browser, that’s annoying.
Why? And what’s the fix?
Hi @Valp, welcome to the forum 
That is not something I have heard of before. Do you see any other symptoms?
I could imagine that maybe crashing Duplicati will make it restart the server, and this could perhaps trigger a new UI opening.
If something is writing files into the lock_v2 folder, this can also trigger a new UI.
If you start Duplicati and it notices that another instance is running, it will trigger opening the browser UI again. The logic being that you click on Duplicati in the start menu, but it is already running, and here it seems to make sense to open the UI.
Could it be that you have something that is starting Duplicati again?