Before proceeding with the installation, you need to make sure that your operating system meets all the requirements for installing WampServer 3, namely:
WampServer 3 cannot be installed over previous versions, i.e. check if any version of WampServer is installed on your system (Control Panel->Programs and Features);
Windows version must be higher than Windows XP and Windows Server 2003, i.e. WampServer 3 cannot be installed on Windows XP and Windows Server 2003;
The Microsoft Visual C++ Redistributable Package 2012 and 2015 must be installed on Windows, they are needed for the components included in the WampServer 3 assembly to work. If they are not, then the corresponding errors will appear during installation (for example, VCRUNTIME140.dll or MSVCR110 is missing. dll), we talked about such errors and how to install these redistributable packages in more detail in the material "Description and installation of Microsoft Visual C ++ Redistributable Package 2015";
It is recommended to install WampServer 3 to the "wamp" folder in the root of the drive, for example, "C:\wamp" or "D:\wamp", and it is not recommended to install to a folder with spaces in the name.
It is also recommended to close Skype during installation and disable IIS services (if they are running).