The solutions provided here are from users who have tried and approved them. Concerning this issue, the message from the Microsoft development team is that allowing multiple accounts for MS Teams is a work in progress.

Script to run Multiple Instances for Teams Windows Application

This is a script readily available on the internet. Since MS Teams does not allow for multiple instances this is a workaround. However, this is not a permanent fix as you have to run this script for every instance you want to run. Conversely, this is one of the solutions that works fine and gets the work done. To run this script

Run Multiple Instances on Web Browser

This solution is for people who want to use the Teams web app. The web app design of the Teams app is not the most dynamic and many people do not use it. In any case, you want to use the web application of MS Teams this solution is for you. However, since multiple instances of MS Teams are not allowed you will have to either create multiple instances of a browser, use different browsers or make use of the private mode or incognito mode of a browser. Below are the different steps for this solution. For a different browser, visit this link. This article will provide steps taking the example of Google Chrome. For running multiple instances on a browser Continuing on this, you can also use multiple accounts on different browsers. Moreover, another method is to run log in with different accounts in incognito mode. However, this will require opening and closing multiple incognito windows. If you have multiple users on the same computer i.e. a family PC the previous steps can prove to be a hassle. For this purpose, the best way is to keep the MS Teams client and web apps separate. You can sign in to different accounts on the web browsers while keeping your original account intact.

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