Ensure you have downloaded the full v1.7.2 package. Use a tool like WinRAR or 7-Zip to extract the folder to a location on your drive with at least 8GB of free space.
Open the extracted folder and check the DLC or Add-ons directory. Version 1.7.2 usually bundles all previous content, including the Druid and Rogue classes. Portal Knights Free Download (v1.7.2 & ALL DLC)
This is usually solved by installing the latest DirectX or the specific C++ Redistributable version mentioned in the error. Ensure you have downloaded the full v1
Locate the PortalKnights.exe file. Right-click it and select "Run as Administrator" to ensure the game has the necessary permissions to save your progress. Version 1
For the "Free Download" version, local split-screen is the most reliable way to play; online multiplayer may require a specific Steamworks Fix .
Your saves are typically located in %USERPROFILE%\Saved Games\Portal Knights . Back this up before applying any future patches.