Message "cannot verify sever identity"

Hello habibur33,

It looks like no one has responded to your question. Here are a couple things that might help others answer your question:

1. Can you share the exact error message?
2. Does this happen when you open a specific app, like Mail or Calendar?
3. Does this happen on any other devices?

Please provide as many details as you can and thanks for using the Apple Support Communities!

Thanks for replying, habibur33, and that additional info, it really helps! Since this is related to your Hotmail account, temporarily remove the email account and then re-add the account:

If you can’t send email on your iPhone, iPad, or iPod touch

Have a great day and thanks for using the Apple Support Communities!