AWS VTL Tape Library showing OFFLINE after restarting NetVault Server

Hi Everyone,

I added AWS VTL to my NetVault Backup two weeks ago. 

I am working on to set up backup jobs to AWS VTL. 

Today, I have restarted my NetVault Backup to install Windows updates. After restart, AWS Tape Library is showing OFFLINE.

I tried to make it online by restarting the library and making drive online, But couldn't able make it Online.

Have anyone seen this problem with Amazon VTL?

Please guide me. Thank you in advance.