Windows 8.1 ISO download for 64 and 32 bit

No way to download Windows 8 ISO from Microsoft now.

About the Windows 8 ISO download. Modified or corrupted ISOs can contain malware, ransomware, spyware, or other malicious software that can compromise your system, steal data, or cause damage. Unauthorized copies may be illegally distributed, which can lead to legal issues. 

How to verify the authenticity:
* Always ensure the ISO is downloaded from official Microsoft links or authorized partners.
* Use your valid product key to activate and verify the ISO during installation.
* Check the ISO hash (SHA-1 or SHA-256) against official hashes if available.

The safest way is to download Windows 8 ISO directly from Microsoft with a valid product key. Always verify the source and check the ISO hash if possible. Avoid downloading from unofficial third-party sites that may host tampered or infected copies.

Downloading Windows 8 ISO files for legally can be challenging, as Microsoft typically offers these through official channels that require a license key. However, there are some legitimate options you might consider:

• Microsoft's Media Creation Tool (for Windows 8, 8.1): Although primarily for Windows 8, 8.1, Microsoft’s Media Creation Tool allows you to download ISO images directly. You need a valid license, but the tool itself is free to use "Download Windows 8.1 Media Creation Tool".
• Archive,org or Other Repositories: Occasionally, older ISO files are archived on websites like Archive.org, but be cautious if you are going to download Windows 8 ISO files. Files from unofficial sources may be tampered with or illegal to download and use. Always verify the integrity and authenticity of the ISO.

By the way, to activate Windows 8, you'll need a valid license key unless you are installing for evaluation or testing purposes.

Downloading Windows 8 ISO files from official and trusted sources is important to ensure safety and integrity, especially for corporate use. Since Microsoft has shifted focus to Windows 10 and Windows 11, official direct downloads for Windows 8 ISOs are no longer prominently available from Microsoft.

Here are the recommended options:

1. Microsoft’s Official Download Page (via Windows 8 or 8.1 Product Key)
2. Some sites host ISO files, but they may be unverified or unsafe. If you choose to go this route, ensure the source is reputable before downloading Windows 8 ISO file.

This is tricky task as Windows 8 and Windows 8.1 has been discontinued for years. One possible way to download Windows 8 ISO file is via MSDN.

MSDN stands for Microsoft Developer Network. It was Microsoft’s program for developers, IT pros, and organizations to access software, documentation, and tools.

A key part of MSDN was that members (through a subscription) could legally download ISO files of almost every Microsoft product ever released — Windows, Office, SQL Server, Visual Studio, and more — along with license keys for development and testing.

For Windows 8.1 ISO download, log in at my.visualstudio.com → Downloads → search for Windows 8.1.

Next, choose the edition and language, then download the ISO with official SHA-1 hashes for verification.

Pros:
✔ 100% official source, safe and verified
✔ Includes multiple versions (Core, Pro, Enterprise, etc.)

Cons:
✘ Requires a paid subscription or access through a company account
✘ Not available to the general public without subscription

Windows 8.1 end of support on January 10, 2023 and the download link for Windows 8.1 ISO is no longer available.

https://learn.microsoft.com/en-us/lifecycle/products/windows-81

After this date, this product will no longer receive security updates, non-security updates, bug fixes, technical support, or online technical content updates. If devices do not meet the technical requirements to run a more current release of Windows, Microsoft recommends replacing the device with one that supports Windows 11. Please go here for detailed information.

This applies to the following Windows 8.1 editions: Enterprise, Enterprise N, N, Pro with Media Center, Professional, Professional N, SL

This means you have to download Windows 8.1 ISO from somewhere.