# App store domain not reachable

Last updated: July 24, 2026

## Problem

This error occurs when trying to add an App Store app to the App Repository in the MDM Server.

## Cause

The error occurs when the MDM Server has issues in connecting to the internet due to proxy and/or internet connectivity issues. This issue can also occur when the App Store domain has been blocked by a proxy/third-party filters.

## Resolution

Ensure MDM can connect to the internet and configure the proxy and internet settings accordingly. Ensure **http://itunes.apple.com is opened at port 80 and https://*.apple.com is opened at port 443** and is not blocked by proxy/third-party filters. MDM Server must access these domains for managing iOS apps.

**Applies to**: App Store, App Repository, Mobile Device Management

**Keywords**: MDM, App Store, Mobile Device, Device Enrollment.