windows update on lumia 640 and messages and contacts gone. How do I get them back?

[Windows Central Question]

I downloaded the update on my lumia 640 last night and lost all call history, messages, and contacts. I need them back; help please?

 

[Maurizio Troso]

I downloaded the update on my lumia 640 last night and lost all call history, messages, and contacts. I need them back; help please?

They are downloaded automatically via your Onedrive once you confirmed your MS account via security check (you can use a pc and your personal hotmail for getting it)