Hello GhAbbas,
Thanks for reaching out to the Apple Support Community. I understand you've had some trouble connecting your Mac to a server, and I have some information that may help.
If you have not already, it may be helpful to check your time and date settings, as these are necessary for proper authentication. Have a look at the article below.
macOS Sierra: Set the date and time on your Mac
If you run into any trouble, please reach out again.
Best Regards.
Thanks for reaching out to the Apple Support Community. I understand you've had some trouble connecting your Mac to a server, and I have some information that may help.
If you have not already, it may be helpful to check your time and date settings, as these are necessary for proper authentication. Have a look at the article below.
macOS Sierra: Set the date and time on your Mac
If you run into any trouble, please reach out again.
Best Regards.