Microsoft provides official tools for legitimate license holders to download the ISO files. If you have a valid product key, you should use these methods:
The installation takes about 5 to 10 minutes. Once finished, open Word. You will be prompted to accept the license agreement. The software will either activate silently or ask you to enter the key again.
: The ISO file acts as an offline installer , allowing you to set up the software without a constant internet connection once downloaded.