---
title: "Scheduled Maintenance Windows"
slug: "scheduledmaintenancewindows"
updated: 2025-12-17T22:44:34Z
published: 2025-12-17T22:44:34Z
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.12dsynergy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Scheduled Maintenance Windows

> [!CAUTION]
> Updated on 17th December, 2025

It is important to regularly maintain any system you use to ensure it is running in its optimal state. In the case of a managed solution, you might expect this always. Why else would you seek external management of a system or service?

As a cloud customer of 12d Synergy, we take the burden of managing application infrastructure, SQL infrastructure, and Windows Servers away from you, so that you can focus on more important things within your business. To ensure this, we perform our maintenance tasks, which will last for a short duration, during which you cannot use our product.

These tasks are mainly centred around the following:

- Ensuring Windows Updates are applied to the servers
  - NB: Critical Security Hot Fixes, as identified by Microsoft, may fall outside of this scope
- 12d Synergy Server application upgrade (if applicable)

Application updates will only occur every quarter when relevant updates are available, as outlined in the table below as ‘**Application + Security**’ updates. This update will require an outage between 5 am to 5 pm (12 Hours).

In the months between application updates, we will also perform ‘**Security Only**’ updates, which will require a small time window between 5 am and 8 am (3 Hours).

**Scheduled Maintenance Dates for 2026**

| **Date** | **Update Type** | **Time** |
| --- | --- | --- |
| Sunday, 18th of January | Application + Security | 5 am to 5 pm AEDT |
| Sunday, 15th of February | Security Only | 5 am to 8 am AEDT |
| Sunday, 15th of March | Security Only | 5 am to 8 am AEDT |
| Sunday, 19th of April | Application + Security | 5 am to 5 pm AEST |
| Sunday, 17th of May | Security Only | 5 am to 8 am AEST |
| Sunday, 14th of June | Security Only | 5 am to 8 am AEST |
| Sunday, 19th of July | Application + Security | 5 am to 5 pm AEST |
| Sunday, 16th of August | Security Only | 5 am to 8 am AEST |
| Sunday, 13th of September | Security Only | 5 am to 8 am AEST |
| Sunday, 18th of October | Application + Security | 5 am to 5 pm AEDT |
| Sunday, 15th of November | Security Only | 5 am to 8 am AEDT |
| Sunday, 13th of December | Security Only | 5 am to 8 am AEDT |

During this period, your instance of 12d Synergy will be unavailable as we perform the required maintenance. Once completed, you will receive a notification that your instance is available. The downtime will be approximately 1 to 2 hours during this time window.

Due to the increase in frequency, a reminder notification will be sent on Monday and Friday before the scheduled maintenance dates.

If the scheduled maintenance impacts critical business deliverables, please contact us at [support@12dsynergy.com](mailto:support@12dsynergy.com). We can reschedule the proposed date, if necessary.