Microsofthelpviewer Viewer supports all versions

Microsoft Help Viewer Viewer

1. Download Viewer:

Open VS, click Help on the VS menu bar:

In the Help Drop-down options, select: Set Help preferences:

Vs default is started in the browser, we need to manually modify to use in the Help Viewer, if the Help Viewer is not installed, the system will be prompted to install, the file is about 1 m:

Then reboot vs, click on the blank area to press F1, and the following box will pop up:

When you select an installation source to be online, there are multiple items that you can add, either individually or by selecting all (all I choose) to add:

Click the update after the addition completes, wait for download to complete, any reboot vs, press F1.