How to know if system architecture is 32 or 64 bits
This article explains how to know if your system is based on a 32 or 64 bits architecture. For KeyLemon to work you need to download the right package - if you download the wrong one nothing will break, but the software won't install and you will see a message to say you have the wrong version. If this happens just download the right one and try again.
As a very basic rule of thumb - if you don't know whether your system is 32 or 64 bits then it is probably 32 bits.
On Windows XP
Follow the instructions below:
- right click on 'My Computer' in the start menu
- choose 'Properties' on context menu
- Click the 'General tab'. The operating system appears as follows:
- For a 64-bit version operating system the text 'Microsoft Windows XP Professional x64 Edition Version < Year>' appears under System.
- For a 32-bit version operating system the text 'Microsoft Windows XP Professional Version <Year>' appears under System.
On Windows Vista
Follow the instructions below:
- right click on 'Computer' in the start menu
- choose 'Properties' on context menu
- The operating system appears as follows:
- For a 64-bit version operating system the text '64-bit Operating System' appears for the System type under System.
- For a 32-bit version operating system the text '32-bit Operating System' appears for the System type under System.






