It’s a good idea to back up your important files, photos, and videos to an external hard disk, USB flash drive, or the cloud before installing the update. Disk space requirementsĬheck to make sure your PC has enough free disk space to install SP1.Įstimated amount of free disk space neededĭownloading SP1 from the Microsoft website The version of Windows 7 is displayed next to System type. Select the Start button, right-click Computer, and then select Properties. You’ll need to know if your PC is running a 32-bit (x86) or 64-bit (圆4) version of Windows 7. Before you begin Check if your PC is 32-bit or 64-bit If Service Pack 1 is listed under Windows edition, SP1 is already installed on your PC. To check if Windows 7 SP1 is already installed on your PC, select the Start button, right-click Computer, and then select Properties. It takes about 30 minutes to install, and you'll need to restart your computer about halfway through the installation.

The recommended (and easiest) way to get SP1 is to turn on automatic updating in Windows Update in Control Panel and wait for Windows 7 to notify you that SP1 is ready to install. We recommend you move to a Windows 11 PC to continue to receive security updates from Microsoft. So when you search for particular dlls you would know if its windows 7 system or old versions like xp/vista.Support for Windows 7 ended on January 14, 2020 With windows 7 new DLLs have been added in the system32 as compared to vista. Also you can use to query version info from the system dlls to detect exact windows build date etc. Based on this you can decide what is the base version of windows. MSDN will detail what features are available in each version and how to query if its available. Same way ultimate edition comes with bitlocker etc and home premium doesnt. For ex, in windows vista/7 home basic you would not find aero experience. This is not a reliable at all.Ī better way is to check the existance of features which are particular to each version of windows. Windows Vista is version 6.0 and Windows 7 is 6.1 which ideally should have been 7. I was reading an article about best practices (lost the link) and it clearly said never use these version numbers which microsoft may change in future updates to detect windows version. Using approach like checking the version number is incorrect in my opinion.

Win 7 home premium