Lost contact updated Lumia 640 to windows 10

[Windows Central Question]

After the update some of my contacts are missing can't find them why?

 

[Chintan Gohel]

After the update some of my contacts are missing can't find them why?

go to mail app and check to see if there's any issue with your email account
Alternativeky, check in settings >accounts to see if there's any issue with your account

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