Hi Roberto,
My name is Umar and I'd be happy to help you out with your question.
Please note: This is a user-to-user community forum. We are users just like you who help others. We are not employees of Microsoft.
I'm sorry to hear about the issues you're experiencing with your Jabra Evolve 75 headset and the new Microsoft Teams. Here are some steps you can try to resolve the issue:
Check Device Settings in Teams
Open Microsoft Teams.
Go to your profile picture and select Settings.
Select Devices.
Under Audio devices, make sure your Jabra Evolve 75 is selected for both the Speaker and Microphone.
Update the Jabra Evolve 75 firmware to the latest version using Jabra Direct software:
https://www.jabra.com/software-and-services/jabra-direct
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.'
Ensure you have the most recent version of the new Teams app installed on your device.
Jabra might be aware of the issue and have a solution. Visit their support website (https://www.jabra.com/support) and search for compatibility information with the new Teams client.
If Jabra doesn't have a solution, report the issue to Microsoft Teams support. They can investigate further based on your details.
Note: Since Microsoft forced you to use the new Teams, there's no direct way to switch back to the old version at the moment.
I hope this information is helpful. Please let me know if you have any other questions.
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Best Regards,
Umar Majeed