Use your primary machine to install the tool properly.
In this article, we will dissect the myth of a portable .exe for Power BI Desktop, explore the technical barriers, and provide three actionable strategies to achieve a portable Power BI workflow. A classic "portable" application is a software program that does not require administrative installation on a Windows registry. You can place it on a USB stick, an external SSD, or a cloud-synced folder, plug it into any Windows PC, run the .exe file, and have the full application available instantly. Examples include portable versions of Firefox, VLC, or GIMP. Power Bi Portable Version
If you absolutely, desperately need a click-and-run solution for a locked-down laptop, use the Power BI Report Builder (for paginated reports). It is significantly smaller, has fewer dependencies, and some users have reported success running it from a portable Apps folder—though this remains unofficial and unsupported by Microsoft. Use your primary machine to install the tool properly