Download-hearts-of-iron-4-field-marshal-edition-v1-9-1-online -

Note: You can only play with others who are also specifically on v1.9.1. A Note on Third-Party Downloads

If you’ve played newer versions, go to Documents/Paradox Interactive/Hearts of Iron IV and delete the shadercache folder to prevent crashes. Note: You can only play with others who

In the "Beta Participation" dropdown, select . The was a pre-order/launch bundle that has since

The was a pre-order/launch bundle that has since been discontinued and replaced by the Ultimate Bundle . However, if you own any version of the game on Steam, you have access to all previous patches. Open your Steam Library . Install Hearts of Iron IV normally. Step 2: Rolling Back to v1.9.1 (Husky) Install Hearts of Iron IV normally

This sounds like you are looking for a specific, older version of the (v1.9.1) to play online.

To play online with others on this specific version, everyone in the lobby must have the same "checksum" (the version code). Right-click in your Steam library. Select Properties > Betas .