I have a Lumia 535- viber and whatsapp are not working properly; how can I fix them?

[amhilmi]

viber not working
whatsapp not wrking

 

[gpobernardo]

Welcome to Windows Central! However, we need more details to be able to assist you.

What OS version does your Lumia 535 have?

Are your apps installed on an SD Card?

Is your phone connected to the Internet?

What made you say that they are "not working"? Does it not load? Does it not send messages? Do you not receive notifications?

P.S.
We've made changes to your title to make it more readable, and moved your thread to the appropriate forum.

 

[Dipesh Shrestha LP]

check ur OS version is upto date or not