WAMP won't turn green. It was working fine a couple of weeks ago. When looking at other answers on this topic, a lot said to install services in Apache.
When I do this, I get an error code stating:
See Question&Answers more detail:os"The program can't start because VCRUNTIME140.dll is missing from your computer. Try reinstalling the program to fix the problem."
As Oriol said, you need the following redistributables before installing WAMP.
From the readme.txt
BEFORE proceeding with the installation of Wampserver, you must ensure that certain elements are installed on your system, otherwise Wampserver will absolutely not run, and in addition, the installation will be faulty and you need to remove Wampserver BEFORE installing the elements that were missing.
Make sure you are "up to date" in the redistributable packages VC9, VC10, VC11, VC13 and VC14 Even if you think you are up to date, install each package as administrator and if message "Already installed", validate Repair.
The following packages (VC9, VC10, VC11) are imperatively required to Wampserver 2.4, 2.5 and 3.0, even if you use only Apache and PHP versions VC11 and VC14 is required for PHP 7 and Apache 2.4.17
VC9 Packages (Visual C++ 2008 SP1)
https://www.microsoft.com/en-us/download/details.aspx?id=5582
https://www.microsoft.com/en-us/download/details.aspx?id=2092
VC10 Packages (Visual C++ 2010 SP1)
https://www.microsoft.com/en-us/download/details.aspx?id=8328
https://www.microsoft.com/en-us/download/details.aspx?id=13523
VC11 Packages (Visual C++ 2012 Update 4) The two files VSU4vcredist_x86.exe and VSU4vcredist_x64.exe to be download are on the same page: http://www.microsoft.com/en-us/download/details.aspx?id=30679
VC13 Packages[/b] (Visual C++ 2013) The two files VSU4vcredist_x86.exe and VSU4vcredist_x64.exe
VC14 Packages (Visual C++ 2015) The two files vcredist_x86.exe and vcredist_x64.exe to be download are on the same page: https://www.microsoft.com/en-us/download/details.aspx?id=52685
VC Packages x64 (Visual C++ 2017)
https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads
