Maintenance for the week of January 19:
• PC/Mac: No maintenance – January 19
• NA megaservers for patch maintenance – January 21, 4:00AM EST (9:00 UTC) - 10:00AM EST (15:00 UTC)
• EU megaservers for patch maintenance – January 21, 9:00 UTC (4:00AM EST) - 15:00 UTC (10:00AM EST)
Firstly can you try run the launcher as administrator and launch the game
Disable any anti-virus/firewall while trying to launch the game (Just remember to re-enable them once finished)
If unsuccessful please try:
Click the start button and in the search box type in MSCONFIG
Choose "Selective Startup" and UNCHECK "Startup Items"
Please restart your pc after this step and reload your launcher
this has work for some it might help you