Hi all,

We having issue connecting to Apple Store even the Apple server block addresses are opened.
Apple Store and iCloud are enabled (Restrictions>>Preferences: Enable selected items) via Jamf Pro.
I've created a static group and an enabled-AppStore-iCloud profiles for certain Macs that approved by security/network team.

Error messages for Sierra (10.12.6): - Verification Failed
- You can't sign in at this time

Error messages for Mojave (10.14.1): I could sign in, but can't connect to the App Store server; a blank page

Need you guys suggestions.