by Christophe Vallois
October 14, 2026
8 min read
Microsoft 365: data location in Switzerland (2026)
New Microsoft 365 setting: will your data stay in Switzerland after 14 December 2026? Timeline, affected tenants and checks to make.
Summary
Microsoft is adding a setting to Microsoft 365, “Store Microsoft 365 customer data in-country”, that decides whether your tenant's data at rest stays in the country, here Switzerland, or may be stored regionally in the EU Data Boundary. The setting becomes visible on 14 September 2026, and the choice takes effect on 14 December 2026. It applies to eligible tenants whose default geography is Switzerland, France, Germany, Norway or Sweden, and covers Exchange Online, SharePoint, OneDrive and Teams. To do before the date: check the configuration, decide with compliance and record the decision.
Introduction
For many Swiss organisations, Microsoft 365 holds most of their emails, files and internal conversations. The country where this data is stored often appears in client contracts, regulatory requirements or an information security policy.
A new setting in the admin center changes how that commitment applies. This article presents the change, the timeline, the affected tenants and the checks to make before 14 December 2026. The facts come from Microsoft's official documentation, cited at the end of the article.
What the new data location setting changes
The setting fixes the country where the data at rest of your core Microsoft 365 services is stored. It is called “Store Microsoft 365 customer data in-country” and is configured in the “Data location” section of the admin center.
| Setting | Effect |
|---|---|
| On | Microsoft keeps your data at rest in the geography associated with your tenant, here Switzerland. |
| Off | Microsoft may store your data regionally in the EU Data Boundary. |
Switching the setting off removes the in-country data-at-rest commitment for these services. The commitments linked to the EU Data Boundary remain in place whatever the setting.
Three dates to remember
The timeline rests on three milestones: when the setting becomes visible, when the choice takes effect and how long a reversal takes.
| Date | What happens |
|---|---|
| 14 September 2026 | The setting becomes visible in the admin center. The current location of the data remains unchanged during the notice period. |
| 14 December 2026 | The recorded choice takes effect. For a tenant left on “Off”, Microsoft may begin moving and storing data regionally. Only part of the data may move that day. |
| Afterwards | The setting remains editable. A return to storage in Switzerland takes about 6 months. |
Which tenants and services are affected
The setting is aimed at eligible commercial tenants whose default geography is Switzerland, France, Germany, Norway or Sweden. It covers four services:
- Exchange Online
- SharePoint
- OneDrive
- Microsoft Teams
Tenants with Advanced Data Residency or Multi-Geo follow the rules of their offer, and the setting stays hidden. The eligibility conditions exclude some tenants: for them, the current commitment remains unchanged.
The default value depends on the tenant's creation date. It is “Off” for eligible tenants created after 14 September 2026. For an older tenant, the Message Center states which configuration applies.
How to check your tenant's configuration
The check takes a few minutes in the Microsoft 365 admin center and is done by a global administrator.
- Open Admin > Settings > Org settings > Organization profile > Data location.
- Review the “Commitments” tab and the value of the setting.
- Read the “Data Location Card”, which shows the Current Geography and the Committed Geography for each service.
The Current Geography shows where the data sits today. The Committed Geography shows where Microsoft has committed to store it at rest. While data is being moved, the two may differ temporarily. For a tenant created before 14 September 2026, the Message Center complements this check with the configuration specific to your tenant.
What happens if the setting stays off
From 14 December 2026, Microsoft may begin moving and storing the data concerned regionally in the EU Data Boundary. Only part of the data may move that day.
The EU Data Boundary covers the countries of the European Union and EFTA, Switzerland included. The exact storage country then ceases to be covered by the in-country storage commitment.
A return remains possible. Switching the setting back on recommits your data to your tenant's geography, and moving it back takes about 6 months. A decision taken before 14 December avoids this delay.
Storage and jurisdiction: two separate questions
The setting answers one question, storage location. The question of the law applicable to the provider remains separate.
| Question | Answer |
|---|---|
| Where is the data at rest? | The setting. |
| Who operates the service, under which law? | The provider's legal situation. |
The US CLOUD Act requires providers of electronic communication or remote computing services that are subject to US jurisdiction to disclose data in their possession, custody or control, whether it is located in the United States or abroad. Storage location therefore leaves the question of applicable law open.
Microsoft's Product Terms also describe limited transfers outside the EU Data Boundary: remote access by personnel located outside the zone, customer-initiated transfers, protection against security threats, Microsoft Entra directory data, network transit and pseudonymised service quality data.
What to do before 14 December 2026
Three steps are enough to handle the topic properly.
- Have IT check the configuration. The administrator reviews “Data location” in Org settings and the Message Center.
- Decide with compliance, data protection and management. Client contracts and regulatory requirements determine whether storage in Switzerland is required.
- Record the decision and its rationale. The documentation makes it possible to answer an audit or a client question.
Where Ketl stands: three levels, one country
For documents you keep in SharePoint, your Microsoft 365 tenant's setting determines the storage country. For documents managed in Ketl, all three levels of sovereignty remain in Switzerland.
| Level | At Ketl |
|---|---|
| Storage | Servers in Switzerland, with Swiss providers |
| Operations | Ketl Sàrl, a Swiss company headquartered in Geneva |
| AI | Processing in Switzerland, with Ketl's own models |
The three levels remain in Switzerland, under Swiss law. Ketl processes more than 46 million documents across 11 regulated sectors. For a comparison of document management options for Swiss firms, read M-Files alternative: 5 DMS solutions compared for Swiss firms.
FAQ
What is the “Store Microsoft 365 customer data in-country” setting?
It is a new setting in the Microsoft 365 admin center that decides whether Microsoft keeps the data at rest of your core services in your tenant's country, or may store it regionally in the EU Data Boundary. It covers Exchange Online, SharePoint, OneDrive and Teams.
When does the setting take effect?
The setting becomes visible on 14 September 2026, and the current location of your data remains unchanged during the notice period. The recorded choice takes effect on 14 December 2026.
Is my Microsoft 365 tenant affected?
The setting is aimed at eligible commercial tenants whose default geography is Switzerland, France, Germany, Norway or Sweden. Tenants with Advanced Data Residency or Multi-Geo follow the rules of their offer, and the setting stays hidden. If your organisation falls outside the eligibility scope, the current commitment remains unchanged.
Is the setting on or off by default?
It is off by default for eligible tenants created after 14 September 2026. For an older tenant, the Message Center in the admin center states which configuration applies.
What happens if I leave the setting off?
From 14 December 2026, Microsoft may begin moving and storing your data regionally in the EU Data Boundary, which covers the EU and EFTA, Switzerland included. Only part of the data may move that day, and the in-country storage commitment ceases to apply.
How long does it take to return to storage in Switzerland?
The setting remains editable at any time. Once it is switched back on, Microsoft recommits your data to the tenant's geography and begins moving it back, which takes about 6 months.
Does the setting answer the CLOUD Act question?
The setting answers the question of storage location. The US CLOUD Act applies to providers subject to US jurisdiction and covers data in their possession, custody or control, wherever it is stored. This question is handled separately, with the provider and legal counsel.
Conclusion
The new Microsoft 365 setting turns a storage commitment into a choice to make before 14 December 2026. Checking the configuration, deciding with compliance and recording the decision take little time, while a reversal takes about 6 months.
Storage location leaves open the question of the law applicable to the provider. That second question deserves a second look in any document sovereignty strategy.
Next step: ask your IT team to check “Data location” this week, then note the decision and its rationale.
→ Request a demo on your own documents → M-Files alternative: 5 DMS solutions compared for Swiss firms
Sources (consulted in October 2026):
- Microsoft Learn, Overview of Product Terms Data Residency (updated 11.09.2026)
- Microsoft, Product Terms, Privacy & Security Terms
- Microsoft Learn, What is the EU Data Boundary?
- Microsoft Learn, Data residency overview and definitions
- United States Congress, Clarifying Lawful Overseas Use of Data Act (CLOUD Act), text