KB Article: Fixing Company Phone Sign-In Error (Error Code 53003)

How to Update Your iPhone and Verify Company Access Requirements

Overview

Some users may see this message when signing into Outlook, Teams, or other company apps on their iPhone:

“You cannot access this right now – Your sign-in was successful but does not meet the criteria to access this resource.”
Error Code: 53003

This happens when the iPhone does not meet the company’s security requirements (software updates, compliance checks, etc.).

Follow the steps below to update your device and verify you are compliant.

1. Update Your iPhone (Required)

Keeping your iPhone updated is required for security and access to company apps.

Step 1 — Check for Updates

1. Open Settings

2. Tap General

3. Tap Software Update

4. If an update is available, tap Download and Install

5. Enter your passcode if prompted

6. Wait for the update to finish and for your phone to reboot

Step 2 — Check for Additional Updates

Sometimes iPhones also need security rapid updates or app updates.

1. Go back to Settings > General > Software Update

2. Make sure everything shows “Up to date”

2. Sign In to the Company Portal App

After updating your phone, you must confirm that your device meets all company requirements.

Step 1 — Open Company Portal

1. Find and open the Company Portal app (blue icon)

Step 2 — Sign In

1. Sign in using your company email

2. Follow any prompts (passcode, device check, etc.)

Step 3 — Sync Your Device

1. In the Company Portal app, tap Devices

2. Select your iPhone

3. Tap Check Status or Sync

4. Wait for the compliance check to finish

3. Check Notifications for Required Actions

If your device still isn’t compliant, you will see steps you must complete.

How to Check Notifications

1. Open the Company Portal app

2. Tap the Notifications tab at the bottom

3. Look for any items marked Needs attention, such as:

   • Passcode requirement

   • Update required

   • App must be re-installed

   • Device must be synced

   • Device not backed up

Complete the actions shown in the list.

4. Try Signing In Again

Once your device is:

• Updated

• Synced

• Marked as Compliant in Company Portal

You can return to Outlook, Teams, or other apps and sign in normally.

5. If the Error Still Appears

If you still get Error 53003, contact IT and provide:

• A screenshot of the error

• Your iPhone model

• Your iOS version

• Confirmation that your Company Portal shows Compliant