Bit.ly Windows10pro.txt ((free))

Using the Windows Activation troubleshooter - Microsoft Support

It is important to clarify upfront that searching for or attempting to download a file named bit.ly windows10pro.txt is and likely constitutes an attempt to bypass Microsoft’s legitimate licensing system. Such filenames are classic vectors for malware, credential stealers, or “crack” tools that violate software terms of service.

Security researchers who have analyzed files distributed under this name have found:

You can download the official ISO from Microsoft and install it without a key. The only limitations:

Microsoft provides a legally free option (unactivated Windows 10) that is 100% safe and fully updateable. If you truly need Pro features like BitLocker or Remote Desktop, save up for a legitimate key or use the free 90-day evaluation for temporary needs.