dynamics 365 app for outlook

hi,

I have an error for using dynamics 365 app for outlook.

i can't sign-in and have below error :

"Something went wrong during sign-in. Please try again. If the problem persists, contact your system administrator."

and using internal url(<serverName><organizationName>) for authorizing.

but i have all prerequisite of dynamics 365 app for outlook and don't know how to resolve it.

please help me