In Steam, right-click the game, go to Properties > Local Files , and select Verify integrity of game files . This often fixes registry mismatches.
The "Reinforcements" expansion for "Arma 2" introduced a variety of new content, including: arma+2+reinforcements+cd+key+updated
However, for the collector or the modder who needs BAF/PMC classnames, finding an is like holding a piece of gaming history. Avoid key resellers promising “lifetime updates”—they don’t exist. Stick to physical media or Steam activation, patch to 1.63, and you’ll be driving a Jackal through Chernarus while everyone else is playing Arma 3 . In Steam, right-click the game, go to Properties
Right-click the Steam shortcut and select . : If your CD keys aren't being recognized
: If your CD keys aren't being recognized or the DLCs appear as "Lite" versions, try running Administrator . Then, launch both Operation Arrowhead once as an admin to complete the registry write process. Physical Media : If you have the "paper" slipcover version (common for Reinforcements