# MNO Migration Architecture and Engineering

> A sourced UK public sector contract award published by MINISTRY OF DEFENCE.

## Key facts

- Buyer: [MINISTRY OF DEFENCE](/buyers/ministry-of-defence/contract-awards)
- Supplier: [Rockstone Technologies Ltd](/suppliers/rockstone-technologies/public-sector-contract-awards)
- Award value: £1,094,338
- Tender value: £1,094,338
- Award date: 30 November 2025
- Published: 28 January 2026
- Contract start: 1 December 2025
- Contract end: 31 March 2026
- Stage: awarded
- Procurement category: services
- Notice ID: b14d7595-aabc-41cc-8fe5-935932b69972-881036
- OCID: ocds-b5fd17-26c85b8a-7069-4f6c-bcd3-e120fa12d051

## Description

The rollout and migration of the Official user base across the whole of Defence for Windows 11 has been delayed by circa 3 months while the team have investigated and resolved several technical and security issues impacting Win11 users\. Contracts linked to the migration were pivoted to help resolve these issues, not that migration has restarted, EUS are having to re-align several contracts and deliverables against the new rollout schedule\.

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## Source

[View the original notice on Contracts Finder](https://www.contractsfinder.service.gov.uk/Notice/b14d7595-aabc-41cc-8fe5-935932b69972-881036)