While it is safe to keep the 2015 Redistributable installed, you generally don't need every single year (2010, 2012, 2013, 2015, 2017) cluttering your system. Because of the binary compatibility change in 2015, you typically only need:
Do you need help a specific version for your operating system or troubleshooting a specific error code? visual c++ redistributable for visual studio 2015
Never download these files from third-party "DLL download" sites. These are often vectors for malware. Only download from the official Microsoft servers. While it is safe to keep the 2015
Next time you see that installer window pop up, don't ignore it with suspicion—welcome it. It’s just the plumbing making sure your game or software actually runs. These are often vectors for malware
The Visual C++ Redistributable for Visual Studio 2015 is essentially a translator that lets modern and semi-modern apps talk to your Windows operating system. It is small, safe, and necessary.
This content is structured to be useful whether you are an end-user trying to fix a software error or an IT professional managing deployments.
Demystifying the Visual C++ Redistributable for Visual Studio 2015: What It Is and Why You Need It