Splwow64.exe – Pre Service Pack 2 Revision History for Windows 7 SP1, Windows Server 2008 R2 SP1 and Windows Small Business Server 2011 (SBS 2011)

26-Feb-2013 – 6.1.7601.22268 – Splwow64.exe – x64 – https://support.microsoft.com/en-gb/kb/2815716 – Splwow64.exe process doesn’t end after a print job finishes in the 64-bit version of Windows 7 or Windows Server 2008 R2

11-Feb-2012 – 6.1.7601.21921 – Splwow64.exe – x64 – https://support.microsoft.com/en-us/kb/2647753 – Update rollup: Fix printing problems in Windows 7 and Windows Server 2008 R2

11-Feb-2012 – 6.1.7601.17777 – Splwow64.exe – x64 – https://support.microsoft.com/en-us/kb/2647753 – Update rollup: Fix printing problems in Windows 7 and Windows Server 2008 R2

19-Mar-2011 – 6.1.7601.21687 – Splwow64.exe – x64 – https://support.microsoft.com/en-us/kb/2526028 – Printing performance decreases in Windows 7 or in Windows Server 2008 R2

18-Dec-2010 – 6.1.7601.21624 – Splwow64.exe – x64 – https://support.microsoft.com/en-us/kb/942914 – Picture Manager may stop responding when you open the “Printer Properties” dialog box in Picture Manager in a 64-bit version of Windows 7 or of Windows Vista

17-Dec-2010 – 6.1.7601.17527 – Splwow64.exe – x64 – https://support.microsoft.com/en-us/kb/942914 – Picture Manager may stop responding when you open the “Printer Properties” dialog box in Picture Manager in a 64-bit version of Windows 7 or of Windows Vista