Microsoft Is Retiring “MemberOf” in Entra on November 3. Here’s What Schools Need to Know

[et_pb_section fb_built=”1″ _builder_version=”4.27.4″ _module_preset=”default” min_height=”1977px” custom_margin=”||-49px|||” custom_padding=”||0px|||” global_colors_info=”{}”][et_pb_row _builder_version=”4.27.4″ _module_preset=”default” min_height=”1774.8px” custom_margin=”|auto|-136px|auto||” custom_padding=”||0px|||” link_option_url_new_window=”on” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.27.4″ _module_preset=”default” link_option_url_new_window=”on” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.4″ _module_preset=”default” header_text_align=”center” min_height=”1434.3px” custom_margin=”-78px||-46px|||” custom_padding=”0px||0px|||” global_colors_info=”{}”]

~3 min read

Working in technology for schools, there’s never a quiet moment. New platforms and features arrive constantly, while the infrastructure we already manage slowly drifts towards legacy. Every so often, a change lands that deserves more attention than most. This is one of them.

What’s actually happening

On November 3, 2026, Microsoft is retiring the MemberOf rule operator in Microsoft Entra ID dynamic groups (announced in Message Center post MC1448379). This operator allowed admins to build dynamic groups, administrative units and entitlement policies based on membership of other groups, effectively recreating nested group logic in the cloud.

The important detail is what happens on the day. Microsoft won’t simply switch off the groups. Any configuration using MemberOf will permanently stop background processing, and membership will be frozen in its last known state. Nothing will error or alert. The groups will just quietly stop being correct.

In practice, that can mean:

• Outdated access to Microsoft 365 groups, with new starters missing out and leavers keeping access
• Conditional Access policies that no longer enforce as intended
• Licensing drift, where users keep seats they shouldn’t have or miss seats they need

For a school, where student and staff cohorts change every term and every year level, that’s a serious problem.

Why Microsoft is doing it

MemberOf was introduced as a bridge between traditional on-premises Active Directory nested security groups and cloud-native Entra groups. It never made it out of preview, largely because of performance. Microsoft has acknowledged that a single MemberOf rule can cause processing delays across the entire tenant, including unrelated dynamic groups.

We understand the reasoning. Evaluating nested membership at scale is expensive, and the cost of crunching that much data isn’t falling. But the impact on environments that have relied on it, especially larger ones, is significant. There’s no direct 1:1 replacement, and the reaction from IT admins online has been fairly pointed.

Why this one resonates with us

We’ve built and supported nested group structures for many schools over the years, and that carried straight through into the cloud era with hybrid setups connecting on-prem AD to Azure. Nested groups are popular for a good reason: they’re logical, they scale well with how schools are organised (year level, campus, house, subject, role) and they make day-to-day administration far simpler. Moving away from them takes real design work.

What should you do?

1. Find out if you’re affected. Audit your tenant for any dynamic group, administrative unit or entitlement policy that uses MemberOf. Microsoft suggests using Microsoft Graph PowerShell or the export tool in the Entra admin centre.
2. Decide how to replace the logic. Microsoft’s guidance is to rewrite rules using direct user and device attributes, or convert groups to static assigned membership. Either can work, but it depends on how clean your underlying data is.
3. Consider how much you want to manage in-house. There are many ways to engineer a solution here. For many schools, we’d recommend looking at third-party sync engines that can handle most or all of this logic automatically. The right answer depends on how much you want to own internally versus hand to a specialist connector or provider.
4. Move quickly. We’re in the final term of the year, and this can’t wait for the summer holidays or the start of next school year. November 3 lands before the term ends, so groups will freeze while end-of-year changes are still happening. Leavers, class changes and next year’s intake won’t flow through, and you’ll start 2027 with access and licensing that don’t reflect reality. Make this a priority now, while there’s still time to plan and test properly.

Is hybrid still relevant?

Absolutely. In most school environments, a hybrid setup remains vital, because so many applications still aren’t ready for a pure Azure identity model. We’re certainly getting closer to going entirely cloud native, but we think that’s still a few years off for most schools. Changes like this are a good reminder to design for the environment you actually have today.

Not sure where to start?

If you’re concerned about your setup, or just unsure how to approach this, please ontact us. 

No pressure and no jargon. We’re happy to help you work out where you stand and make sure things keep running smoothly from November 3, just in a slightly different way. To reach out – please click on the Learn More button below or give us a bell.

Source: https://www.neowin.net/news/microsoft-decides-to-retire-memberof-operator-in-entra-id-dynamic-groups-creates-backlash/ 

[/et_pb_text][et_pb_cta title="If you'd like to talk about your technology needs – please contact us get in touch with us today" button_url="https://dev.ozzeal.com.au/learn-more/" button_text="Learn More" _builder_version="4.27.4" _module_preset="default" min_height="90.2px" custom_margin="||1px|||" custom_padding="||39px|||" hover_enabled="0" global_colors_info="{}" sticky_enabled="0"]

📞 1300 676 498 | 8t8tech.com.au

[/et_pb_cta][/et_pb_column][/et_pb_row][/et_pb_section]