Sql Database is not accessible from another User Account

Question

Hello all

Client PC is having 2 user accounts in his system i.e Admin1, Admin2.

 

As SQL Server database is installed on the Local machine, there not might be any issue with the user accounts

 

My program creates the database on one of the user to work with my program, now client switches to another user account (i.e Admin2) and my database is not accessible. I tested it on my PC also, it was not allowed niether with my program nor with SSMS.

 

How to resolve this issue, so that database can be accessible for all the user.