Usman Asar

Neil, Apache server doesn't performs well on windows, either do Linux/Apache combo or Windows/IIS, both combo works as good, I have a tutorial up for setting up Moodle on Windows server using IIS, if you want to use that let me know I'll link you to it.

Try,

MyLiveChat: https://mylivechat.com/ (both free and paid plans)

UserLike : https://www.userlike.com/en/ (Free and Paid)

and finally

Tawk.To: https://www.tawk.to/ (100% Free, and is very popular chat integration) .

Chandhru, if you're on shared hosting, then you're out of luck, they wont let you access  configuration files for SQL databases.

Pierre, I would have very much recommended using windows installer package rather than installing individual components and then installing moodle, as in installer package everything comes pre-set.

But if you want to continue current installation, then use commands in this documentation.

https://docs.moodle.org/33/en/Administration_via_command_line#Converting_InnoDB_tables_to_Barracuda

Ripa, how was your moodle installed? Manually or using a script installer?