If you have downloaded a file named KMSAuto_Net_149_Portable.zip and it asks for a password, it is usually for one of two reasons:
Many file-hosting sites will flag and remove "activator" tools unless they are password-protected. kmsauto net 149 portablezip password link
The version is preferred by many because it can be run directly from a USB drive without leaving residual files in the system registry. The "Portable.zip" Password Link If you have downloaded a file named KMSAuto_Net_149_Portable
KMSAuto Net 1.4.9 Portable: Understanding the Tool and File Access kmsauto net 149 portablezip password link
Right-click the .exe inside the zip and select "Run as Administrator" to ensure the KMS service can be correctly installed. Important Disclaimer
Only download from reputable tech forums or known mirrors. Avoid clicking on "direct download" buttons on suspicious pop-up sites.