copy steam counter-strike source to second location

both my friend and i have purchased steam cs source. i downloaded all 2.4 gb of it but due to internet issues, he could not. i was wondering what would happen if i copy the entire game folder (240) and pasted it on his own computer. he would login on his own pc with his own steam account, and i can save him the lengthy downloads seeing that we also bought cs go.
i can not simply try without being sure of the outcome in fear that i might mess up my account.
my question is would this cause issues of conflicts or blacklisting of any sort?
Best Answer
Sure I've done a similar thing before several times. Just make a backup for the game, it's more reliable, and it will cause no issues at all. Right-click on the game that you want backed up and select "Backup Game Files." You can then use that backup to install such game on any account by selecting "Steam" > "Backup and Restore Games."
Pictures about "copy steam counter-strike source to second location"



Can I copy CSGO files to another PC?
Open the steam application. Right click on Cs:Go and select backup game files, select location of back up and proceed. Select the Backup file name and set the File size for the media you plan to use. The game would be backed up and you can give it to your friend.How do I change the location of my CSGO?
Select "Properties > Local Files > Move Install Folder". Select the Steam library you want to move the game to and click the "Move Folder" button. Steam will move the game's files to the other library location. To move other games, just repeat this process.How do you add a map to CS Source?
Click the "Extract" button and once the extraction is complete the folder with the map files will open. Leave this folder open as you need to copy these files to the correct folders inside your Counter-Strike Source folder.Counter-Strike: Source | Tricks, Bugs, Glitches
Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.
Images: ArtHouse Studio, Laker, Tatiana Syrikova, Dylan Chan