MailZen for iOS/iPad OS - App Re-Enrollement required after upcoming Update!

Scheduled Maintenance Report for Soliton Systems Europe - Status

Postmortem

Dear Customers and Partners,

We have just sent another version to Apple that includes some minor bug fixes, and we are now finally waiting for the review and release of the version 9.40.4 with new UI and a lot of changes!

We appreciate your patience and understanding. As always, if you have questions or issues, please submit them at: https://solitonsystems.atlassian.net/servicedesk or send us an email to: help@solitonsystems.com

Thanks for your time and stay healthy,

The Soliton Systems IT Service Management Team _____________________________________________

SOLITON SYSTEMS EUROPE N.V.

Barbara Strozzilaan 364 | 1083 HN Amsterdam | Netherlands | P: +31 (0) 20 896 5841 | www.solitonsystems.com

Posted Jun 10, 2026 - 16:35 CEST

Completed

The scheduled maintenance has been completed.

Posted Jun 10, 2026 - 00:00 CEST

In progress

Scheduled maintenance is currently in progress. We will provide updates as necessary.

Posted Jun 09, 2026 - 00:00 CEST

Scheduled

Dear Customers and Partners,

The owner of the MailZen app has changed from “Soliton Systems Development Center” to “Soliton Systems Europe”. As a result, all users must enroll the app again using a new activation code.

We will start the deployment of the new iOS App to the Apple AppStore starting at the 9th of June but it might take some time for Apple to review it.

If you would like to use our Test-Flight Version to check it first : https://testflight.apple.com/join/kcJtAusf

We apologize for the inconvenience this causes. Unfortunately, Apple requires this owner change as part of their platform policies and security model, and it cannot be avoided on our side.

## What you will see

When you open the app, you may see the error message:

“PMA36 - Admin reset”

## What happens next

For security reasons, the MailZen app will reset and delete local app data on your device. After the reset, you can simply start a new enrollment and continue using MailZen with the new activation code.

## What you need to do

1. Open MailZen.
2. If you see “PMA36 - Admin reset”, confirm the reset if prompted.
3. Start the new enrollment and enter the activation code provided by your administrator.

## Additional setup (shared mailboxes & storage connections)

After re-enrolling, you may need to set up some connections again:

- Shared mailboxes must be added again (as you did previously).
- If you had File Shares or OneDrive connected, these connections must also be re-established.
- If you use S/MIME, your user certificate must be copied/imported into the MailZen app again.
- Any locally stored files within the app (e.g., photos or documents saved for offline use) will also be **deleted** by the reset and must be re-synced or added again.

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## Technical information for admins

The app owner change affects the app’s Apple keychain / app security context. With the new owner, access to previously stored sensitive items (e.g., passwords, encryption keys, or access tokens) is restricted by the platform.

To ensure MailZen cannot access any sensitive data created under the previous owner context, the app performs an admin reset and clears its local data. This is the reason users must complete a fresh enrollment with the user activation code.

To ensure that all users receive the activation code at the outset, you can filter the current users based on their device model and send them all the activation code. This will help to minimise the number of questions directed to your support team. It is also recommended that users are informed that the action is necessary with the next update.

Steps to filter the users in the management portal:

- Log into the MailZen Management Portal
- Navigate to “MailZen Administration“ → “MailZen Accounts“
- Filter on top on “Registered“ Accounts
- Select the switch “select all“ and “Perform for selection“ → “Send registration code“

This will send the registration code to “all“ registered users! It is not possible to filter on users with iOS/iPadOS devices!

We appreciate your patience and understanding. As always, if you have questions or issues, please submit them at: https://solitonsystems.atlassian.net/servicedesk or send us an email to: help@solitonsystems.com

Thanks for your time and stay healthy,
The Soliton Systems IT Service Management Team
_____________________________________________
SOLITON SYSTEMS EUROPE N.V.
Barbara Strozzilaan 364 | 1083 HN Amsterdam | Netherlands | P: +31 (0) 20 896 5841 | www.solitonsystems.com

Posted Jun 02, 2026 - 15:41 CEST

This scheduled maintenance affected: Soliton MailZen Cloud Service - Europe (MailZen for iOS).