CS:GO can crash when loading the next map if you're on a 32-bit operating system. To address this, you'll need to edit a txt file.
The crash is caused by going over 4GB total memory usage, which isn't possible for a 32-bit OS. To fix it:
CS:GO won't tell your friends what server you're on if you're playing on a community server, there's an easy command which changes this.
See the official Steam support page here
If you get this error message without have used any 3rd party applications, this quick fix should solve your issue.
None - Opt out of all beta programs
C:\Program Files (x86)\Steam\bin\Steamservice.exe /Install
Help & Options
Enable Developer Console (~)
Set Launch Options...
The console will now open when the game launches.