The following files are available for download from the Microsoft Download Center:

Operating system

Update

All supported x86-based versions of Windows 8.1

Download the package now.

All supported x64-based versions of Windows 8.1

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All supported x64-based versions of Windows Server 2012 R2

Download the package now.

Note The update for Windows RT 8.1 can be downloaded only from Windows Update.

For more information about how to download Microsoft support files, select the following article number to view the article in the Microsoft Knowledge Base:

119591 How to get Microsoft support files from online services Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.