Is VCRedist 2015 Update 1 backward compatible?

2
votes

This is probably a basic question, but I've struggled to find the answer.

I know the Visual C++ redistributables and Windows 10 CRT tried to remove DLL Hell, but is the VCRedist from Update 1 backward compatible?

Problem

  • I've built my C++ code against 14.0.23026.
  • The user already has Update 1 VCRedist installed (v14.0.23506)
  • Installing the older VCRedist fails (detects a newer version).

Worry

Will my code function as before?

I assume entry points may have changed, parameters changed, it will probably break.

I have 2 million lines of code, I can't check them all.

Links

I thought compatibility might be explained here, but I can't see it http://blogs.msdn.com/b/vcblog/archive/2015/03/03/introducing-the-universal-crt.aspx?PageIndex=5#comments

What am I doing to help myself?

I'm in the process of 'anecdotal testing', but I'd appreciate any links to the official answer to develop with confidence.

1
c++visual-c++visual-studio-2015

1 Answers

5
votes

Yes. Newer builds are backwards compatible with older builds including previous Updates, the RTM release, and the RC release.