@DustinB3403 hi. i am the person that has this problem that needs fixing.
Yes i have used FQDN in the user account. still get same error.

Hello Guys, I seem to have found the solution to this issue. By default, Azure has no ports open and that was why i was getting the errors. To solve this problem, i had to create an endpoint for the Virtual machine that had Spiceworks installed in it and open ports 389 and 636 TCP.
Now spiceworks syncs and authenticates with the AD on Azure and on premise.

Hello Guys, I seem to have found the solution to this issue. By default, Azure has no ports open and that was why i was getting the errors. To solve this problem, i had to create an endpoint for the Virtual machine that had Spiceworks installed in it and open ports 389 and 636 TCP.
Now spiceworks syncs and authenticates with the AD on Azure and on premise.

@scottalanmiller I am using site to site VPN to connect

@DustinB3403 hi. i am the person that has this problem that needs fixing.
Yes i have used FQDN in the user account. still get same error.