If the game refuses to start, first check the integrity of game files — in Steam right-click the title, select Properties > Local Files > Verify Integrity. In Rockstar Games Launcher, find GTA V in the library and hit 'Verify Integrity'. Corrupted or missing files are behind this more often than you'd think.
The Rockstar Games Launcher itself sometimes fails to connect to authentication servers. Try restarting the launcher, then sign out and back into your Rockstar account. If the error says something like 'Failed to connect to Rockstar game services', check your firewall — Windows Defender or a third-party antivirus may be blocking outbound connections from the launcher.
This usually ties back to NAT type or a mismatch between your game version and the server. Make sure the game is fully updated — an outdated client won't match with current sessions. If you see error 0x20010006, it typically means a temporary backend issue on Rockstar's side; wait 10–15 minutes and retry.
If a Shark Card payment fails, check that your payment method is correctly saved in your Rockstar Social Club account. Log into socialclub.rockstargames.com, go to Account Settings > Payment Methods and reenter card details. Also confirm there are no pending authorization holds from a previous failed attempt — some banks flag repeated small-amount attempts as suspicious.
Update your GPU drivers — NVIDIA and AMD release GTA-specific optimizations regularly. If crashes happen in Online sessions specifically, lower the texture quality and disable MSAA. Players with less than 8 GB RAM often hit memory bottlenecks in dense areas of Los Santos; closing Chrome and other heavy apps before launching helps noticeably.