If you specifically need the original (not 8.1) or if the Microsoft servers are temporarily down, a Google Drive link becomes the
At first glance, Google Drive seems safer than a random torrent site because Google scans files for viruses. However, this is a dangerous assumption.
To summarize the search for a :
Microsoft’s official "Upgrade with a product key" page sometimes still works for users with valid retail keys. It’s the gold standard for security.
Note: While this provides Windows 8.1, a Windows 8 product key will usually work to activate it, as 8.1 is a free upgrade.