I've identified a key phrase from the provided text: 'P2000 Ivory cs go skin instal the last version for windows'.

It appears that you're looking to install the latest version of CS:GO (Counter-Strike Global Offensive) on your Windows device, with the specific skin being the P2000 Ivory.

To assist you, I've gathered some information:

1. Counter-Strike 2 is a free upgrade to CS:GO and marks the largest technical leap in the game's history.

2. The P2000 Ivory is a popular CSGO skin with a popularity score of 70, making it one of the top 70 most popular skins.

Regarding installation, I recommend following these steps:

1. Ensure you have a valid Steam account and CS:GO installed on your Windows device.

2. Launch Steam and navigate to the CS:GO store.

3. Search for the P2000 Ivory skin in the market section.

4. Purchase or acquire the skin through trade or other means.

5. Once you have the skin, restart your game client.

Please note that I couldn't find any information on installing a specific version of CS:GO with a particular skin. The game updates automatically through Steam, and skins are added to your collection once purchased or acquired.

If you require further assistance or clarification on any steps, feel free to ask!