Do not waste time hunting for a mythical PowerBIPortable.exe on sketchy forums (they are viruses). Instead, invest in a fast NVMe USB SSD and either:
: Standard installations through the Microsoft Store update automatically. A manual portable folder must be deleted and recreated every month to stay current with new features. Power Bi Portable Version
Thus, a true portable Power BI Desktop does not functionally exist. Do not waste time hunting for a mythical PowerBIPortable
For those looking to build reports without a permanent installation, the Power BI Service Power Bi Portable Version
: As of 2026, the PBIR format is the standard for report storage, designed to be more portable for developer collaboration and source control.