Older Versions of MYOB Software Will Be Read-Only Mode from 30th September 2026
Impacted version older than 10 years, including:
- MYOB Accounting Version 24.1 and below
- MYOB Premier Version 19.1 and below
- MYOB Premier Plus Version 19.1 and below
On this date, Activation & Confirmation Server (A&CS) for these products will be decommissioned. After this:
You will no longer be able to make changes to your company file using these versions
Your company file will become read-only after the next confirmation cycle. You can view historical data, but cannot create or edit new transactions unless you upgrade to a supported product
Read-only access allows you to reference past information. This means the software can no longer support for ongoing business operations.
Before Activation & Confirmation Server (A&CS) are decommissioned, you should upgrade to the latest supported version to continue working in your company file.
Why are these versions no longer supported
Older Technical Framework
These versions were built on older technology that no longer works reliably with modern operating systems, the latest compliance framework and environments.
End of Product Lifecycle
As part of the natural software lifecycle, these legacy versions have reached a point at which further updates and improvements are no longer feasible.
Higher Security Standards
New operating systems and security requirements mean older versions can no longer meet today’s security protocols and expectations.
New Compliance Requirements
Modern compliance needs, such as real-time validation and digital reporting features, require newer software capabilities that legacy versions cannot support.
Need help checking your version?
If you’re unsure which ABSS version you’re currently using, our ABSS partner can help you confirm and advise on next steps.
Key Dates
Implementation Date | Targeted Taxpayers |
|---|---|
30th September 2026 | Activation & Confirmation Server (A&CS) disabled for legacy ABSS versions |
After this | Company files become read-only after next confirmation, no edits or transactions allowed |
Plan your upgrade well before these dates to avoid disruption.
To keep working, upgrade to a supported ABSS version
You can continue working by upgrading to a supported ABSS solution before 30th September 2026.
Latest ABSS Accounting or ABSS Premier version (via Product Version Upgrade Cover)
If you are on Product Version Upgrade Cover plan, you may choose to upgrade to the latest supported on-premise version of:
- ABSS Accounting, v28.9 or
- ABSS Premier v23.9 or
- ABSS Premier Plus v23.9
This option allows you to continue using an on-premise setup with ongoing support under your Product Version Upgrade Cover plan.
Upgrade before the decommission date on 30th September 2026 to avoid disruption and keep access to supported features.
Compare your upgrade options
| Product Type | Legacy ABSS Desktop | Latest ABSS Desktop |
|---|---|---|
| Product support | End of lifecycle | Supported with |
| Activation & confirmation | Discontinued after | Yes |
| Ability to edit data | Read-only after decommission | Full access |
| How you work | Desktop only | Desktop only |
| Access outside the office | No | No |
| e-Invoicing readiness | No | No |
| Reports & dashboards | Basic reports | Standard reports |
| Bill & receipt capture | No | No |
| Connect Mobile App | No | No |
| Payroll integration | Separate system | Separate system |
| Security & OS compatibility | Outdated | Maintained |
| Long-term product roadmap | No | Yes |
| Technical Support | No | Valid for 30 days only |
Need Help?
If you need assistance or are unsure which option is right for you, you may contact our ABSS Partner for further assistance.
Our team can help with:
- Checking which ABSS version you’re using
- Advising on the right upgrade option
- Technical support and onboarding product training
