How to get a list of win32 apis that have changed in a windows release

Question

Hi

We upgraded from windows server 2012 to windows server 2019 at client and experienced performance issues. There was a win32 api that we called in code that caused the issue. This api was slower than in 2012 due to a design change.

We want to know a way to get a list of all apis that have major modifications in a windows release so that we can narrow down important workflows that need extensive testing.

Answer 1

Hello,

Welcome to Microsoft Q&A!

As far as I'm concerned, there is no way to get a list of win32 apis that have changed in a windows release.

Windows Server 2012 has reached end of support. You could refer to the follow links:

What's new in Windows Server 2016

What's new in Windows Server 2019

Features Removed or Deprecated in Windows Server 2016

Features removed or no longer developed starting with Windows Server 2019

For more details about a list of the reference content for the Windows application programming interface (API) for desktop and server applications, you could refer to the Doc: Windows API index

Thank you.

Jeanine

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Answer 2

Unless bugfix, I don't think Windows would change or modify APIs' behavior because that can incur severe incompatibility issues.

You can tell you think what API has issue. It's better the comparison is taken under the same configurations/settings for two servers.