I was trying to install the Audacity LAME MP3 player on my computer. The installation was unsuccessful and I received an error message saying lame_enc dll file missing. How should I go past this?

I cannot seem to figure out what the msvcp71 dll file is doing on my computer. It is not directly linked to any programs or software that I have installed on my PC. Can you help me with this? Is it a safe file?

I am trying to install steam on my computer. When I try to launch steam, I get the error message steam_api64 dll missing and then the program crashes. How do I solve this error and start steam successfully?

I have never seen this error before and it almost scared me. I suddenly got an error box with the message the program cannot start because vcruntime140.dll is missing. Since it is missing, I figured I need only download it. How to vcruntime140 dll download?

I am getting a msvbvm50 dll error on my computer. I do not know how to deal with this. How should I go about solving this error? What is this file and what is it used for? I do not remember downloading anything that specifically mentioned this file.

While installing some programs on my new Windows laptop, I have started receiving dll file missing errors. I know that in order to remove these, I need to download dll files. How to go about this? Can you help?

I found a rather odd-looking file on my computer. It is named amtlib dll. It is linked to any program I might have downloaded and used. Is it a safe file? What is it used for, and is it safe to remove it from my computer?

I was trying to install some games from steam when the installation stopped and an error message with d3dx9_43 dll file missing error. I am not a power user and do not know how to deal with this error. Can you help?  

I was trying to install GTA 5 on my computer. The installation was almost complete when I got the message d3dcompiler_43 dll file missing from your system and the installation stopped. How do I get past this error?

I have come across dll files on more than a few occasions. What I fail to understand is why are there so many of them and what are they used for? What is so special about these files and why do so many programs need so many of them?