WAMP shows error 'MSVCR100.dll' is missing

Question

When I tried to install WAMP, that popped up the following alert,

I clicked OK, it continued to install WAMP. When I start, the WAMP logo is always 'yellow'. It isn't turning 'green', meaning there's something wrong. What exactly is the MSVCR100.dll file? How do I obtain it and fix this error?

Answer 1

The MSVCR100.dll file is part of the Microsoft Visual C++, redistributables. You can install them and see if this solves your problem. After you install the above check if your wamp installation is correctly setup. Search for "my wamp icon stays orange" posts.

This article on the WampServer forums shows all the Microsoft Visual C++ runtime libraries you need to have installed on your system for each version of WampServer. To quote:

For Windows 32 : Be sure that you have installed the Visual C++ 2010 SP1 Redistributable Package x86 : VC10 SP1 vcredist_x86.exe

http://www.microsoft.com/download/en/details.aspx?id=8328

For Windows 64 : Be sure that you have installed the Visual C++ 2010 SP1 Redistributable Package x64 : VC10 SP1 vcredist_x64.exe

http://www.microsoft.com/download/en/details.aspx?id=13523

Apache will not run without this component

In fact if you are running the 64bit Windows it is a good idea to install all the 32bit libraries as well as the 64bit ones. After all 64bit windows runs 64 and 32 bit code. You will probably find you need at least one of the 32bit runtimes for some app/utility you will install at some point.

UPDATE

If you are running WAMPServer 2.5 you also need the VC11 redist. Visual C++ Redistributable for Visual Studio 2012

29.08.2014 with WAMP 2.5 I agree that VC11 is needed and it is not a bad idea to have previous distributions installed. It will be needed by other application. I am not sure if you need bit 32 version

http://www.microsoft.com/en-us/download/confirmation.aspx?id=30679

UPDATE Aug. 3rd 2016

As I was informed by Fred -ii- (many thanks by the way) the link for the post in the wamp forums doesn't work anymore. Since I could not find the original link you can try http://forum.wampserver.com/read.php?2,138295. It has lots of info and may help you.

Answer 2

I have tried all the above answers but still the same error was throwing up. Later I found this in WAMP Forum and finally my WAMP works !!!

If you are using WampServer 2.5 on a 64bit Windows You will need both the 32bit and 64bit versions of this runtime.

Microsoft Visual C++ 2012 (www.microsoft.com)

Press the Download button and on the following screen select VSU_4\vcredist_x86.exe Press the Download button and on the following screen select VSU_4\vcredist_x64.exe

Source : http://forum.wampserver.com/read.php?2,123608

Answer 3

Installing just vcredist_x64.exe from Visual C++ Redistributable for Visual Studio 2012 fixed the issue for me.

https://www.microsoft.com/en-us/download/details.aspx?id=30679

I'm using Windows 7 Home Basic 64 bit and installed WampServer 2.5

Answer 4

I have installed the new WAMP 2.5, i have windows 8 x64 bit. I have tried All the above solutions but it didn't work with me and the WAMP icon stays Orange. the thing that works with me is:

1. uninstall the current WAMP x64 bit
2. install this http://www.microsoft.com/en-us/download/details.aspx?id=30679
3. Download and install the WAMP server for x32 bit.
4. Chose Firfox as the browser.

I hope that i will help somebody searching for this answer

Answer 5

Re/installing .NET framework did not worked for me. Some less professional soft wares like tuneup utilities manipulate or constantly keep in use .NET framework files. like that .dll . I learned it while i was trying to uninstall .NET updates before re-installation.

• Dont forget to uninstall wamp from control panel before reinstalling it.
• Uninstalling .NET updates of windows. (controlPanel->uninstall a
• program->view updates) Uninstalling soft wares that prevents
• uninstalling .NETs . Finished successfully uninstalling .NET
• framework updates. Check windows updates. Install updates that shows up AFTER check (.NET framework update. 3update for me under win7x64)
• install wamp (finished flawlessly for me)

Answer 6

Some times you have to install all versions or a bunch of them.

Anyone who has not found above answers useful , take a look at here