Office 2010 SP1 (service pack 1) was recently released by Microsoft. The Office 2010 SP1 includes all the previously released updates as a whole and also comes with new updates which improve security, performance, and stability.

You can either update Office 2010 to Office 2010 SP1 via Microsoft Update and Windows Update or you can visit the official download pages and direct download links of Office 2010 SP1.

Check out Microsoft Office 2010 SP1 KB2460049.

Download Office 2010 SP1 32-bit (x86)

From Microsoft Download Center

Office 2010 SP1 Direct Download Link (US English): http://download.microsoft.com/download/4/0/A/40AA58F5-7CC5-4E74-AB51-5D51C7ED5283/officesuite2010sp1-kb2460049-x86-fullfile-en-us.exe

Download Office 2010 SP1 64-bit (x64)

From Microsoft Download Center

Direct Download Link: http://download.microsoft.com/download/1/A/8/1A879A5A-EE48-49E7-8831-449A71582173/officesuite2010sp1-kb2460049-x64-fullfile-en-us.exe

Note that you have to download the correct version of 32-bit or 64-bit that matches the installed Office 2010 product, and not Windows operating system. For compatibility, Microsoft has recommended most users to install 32-bit version of Office 2010 even though they have 64-bit Windows 7 or Vista.