When I try to download apps, why do I get the message unable to contact your server?

[AC Question]

unable to contact your server comes up on phone

When Samsung S4 is turned on the above message is displayed on phone and am unable to download apps

 

[B. Diddy]

Re: unable to contact your server comes up on phone

Welcome to Android Central! Does this occur on both wi-fi and mobile data? Can you access the web at all?