MsQuic Windows builds will soon start using the latest Windows SDK (v26100)

[Sarath (MSFT) (sm-msft)]

After the pull request #5262 is merged, MsQuic Windows builds will start using the latest Windows SDK (version 10.0.26100.0 or newer).

You can download and install this version of Windows SDK here.

You can verify the Windows SDK version(s) installed on your Windows machine using a variety of ways:

• "Installed Apps" settings page
• Older "Appwiz.cpl" snap-in
• Looking at the folder names under the "%programfiles(x86)%\Windows Kits\10\Include" folder.

If your Windows build environment does not already have the newest SDK installed, MsQuic builds in that environment will continue to run normally using the prior SDK version installed (version 10.0.22621.0). Please be aware that this build status is temporary. You may face build breaks in the future in such environment if the MsQuic codebase starts using newer features from the Windows SDK. We suggest you install the latest Windows SDK to avoid any disruption in your environment.

The updated Windows SDK should not impact existing MsQuic binary compatibility to run on various Windows OS versions.

(edit: version numbers are hard...)