Hi @Sanjeev Mohindra ,
Does this issue persist all the time?
Does anyone else have the same issue in your organization?
This issue may because your client version is not support screen sharing when you are using Multitasking. In this case, we recommend you check if your Teams client version is the newest version.
If it is the newest version, you can try to clean your Teams client cache file to see if this issue can be fixed.
https://td.unh.edu/TDClient/60/Portal/KB/ArticleDet?ID=2197
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