Why is my Windows phone dropping phone numbers?

[Windows Central Question]

why is my windows phone dropping phone nbrs

Certain numbers on my phone (usually the ones I call most often) will suddenly drop off. I have not deleted them and I have to add them again.

 

[jmshub]

Re: why is my windows phone dropping phone nbrs

Are these numbers saved to an account that isn't your primary Microsoft account? It could be a secondary account, and that account has gone offline.