ByMicrosoft Intune Security Update 2026: A Major Change
We are seeing that Microsoft has taken a significant and decisive step as of January 19, 2026, implementing new security rules related to Microsoft Intune Mobile Application Management (MAM). This change has directly impacted users and companies who did not update their work apps, SDKs, wrappers, and Company Portal promptly.
This update is not limited to a single app but affects Outlook, Teams, OneDrive, and all other managed work apps. This is the reason why some users are suddenly unable to open their work email or office apps today.
Which Users Are Most Affected?
We can clearly state that this change affects all organizations and employees:
Who is using apps running on older SDKs or wrappers
Those who have not updated their apps on Android or iOS
Whose Android devices have an older version of the Intune Company Portal installed
Whose companies ignored the warnings from the Microsoft 365 Admin Center
The direct consequence of this is that work email access has been blocked for many users.
What is the Microsoft Intune MAM Update, and Why Was It Implemented?
We see that Microsoft has implemented this update to further strengthen data security, app protection, and enterprise safety. Under the new rules:
iOS Wrapped Apps
iOS SDK Integrated Apps
Android Intune Company Portal
All of these are now required to be on the latest version. Apps running on older versions will be directly blocked.
Also read: 10 Best Sandbox Applications for Windows (for System Security)
Company Portal Update Mandatory for Android Users
We are specifically clarifying for Android users that if the Intune Company Portal app is not version 5.0.6726.0 or higher, then:
All other Managed Work Apps will also not launch
Apps like Outlook, Teams, and OneDrive will stop working
The entire work profile may be locked
This change is extremely important for the Android work environment. New Terms for iOS App SDK and Wrapper Updates
Microsoft has also released clear technical guidelines for iOS app developers and IT administrators:
For Xcode 16-based apps:
Intune App SDK v20.8.0
Intune App Wrapping Tool v20.8.1
For Xcode 26-based apps:
Intune App SDK v21.1.0
Intune App Wrapping Tool v21.1.0
Apps that are not built or updated with these versions will be blocked, whether they are Internal or Custom LOB Apps.
Why are Outlook, Teams, and OneDrive being blocked?
We are seeing that many users are under the misconception that only Custom Apps are affected, while the truth is that:
Microsoft Outlook
Microsoft Teams
Microsoft OneDrive
If these apps are not updated from the Play Store or App Store, they can also be blocked under Intune policy. Microsoft has implemented this as a Zero Tolerance Policy.
How to check from the Microsoft Intune Admin Center
We recommend that IT administrators immediately review the situation in the Microsoft Intune Admin Center.
The steps are as follows:
1. Go to the Apps section
2. Click on Monitor
3. Select App Protection Status
4. View the User Report
From here you can find out:
Which user is on an older app version
Which app is running on an older SDK
Which user is at risk of being blocked
Impact on Businesses and Employees
We understand that this update has caused sudden disruption for many organizations, but the objective is clear:
To protect corporate data
To prevent unauthorized access
To secure work data on mobile devices
Companies that did not update in time experienced disruptions to their employees’ ability to work from mobile devices.
What is the solution and what to do next?
We can clearly state that there is only one solution to this problem – immediate updates. All users should update their work apps.
Android users should update the Company Portal.
iOS developers should update the SDK and Wrapper.
IT teams should review App Protection Policies.
For organizations that are still delaying, the situation could become more critical in the coming days.
Key keywords related to the Microsoft Intune update:
Microsoft Intune MAM Update 2026
Work Email Blocked by Microsoft
Intune Company Portal Update
Outlook Teams OneDrive Not Opening
Microsoft Intune Security Changes
Intune App SDK Update iOS Android
Conclusion
We emphasize that this Microsoft Intune update is fundamental to the future of enterprise security. Organizations and users who adopt the update promptly will not only avoid work disruptions but also keep their data secure. This change is permanent, and there is no option to revert.
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FAQ: Frequently Asked Questions about Microsoft Intune Updates and Work Email Blocking
Q1. Why has Microsoft blocked work email access?
Microsoft has implemented new rules to strengthen the security of Intune Mobile Application Management (MAM). Apps that are not on the latest SDK, Wrapper, or Company Portal version are being blocked for security reasons.
Q2. When did this update take effect?
This update took effect on January 19, 2026. A hard block on unupdated apps began on this date.
Q3. Which apps might be affected by this block?
The following apps may be affected by this block:
Microsoft Outlook
Microsoft Teams
Microsoft OneDrive
All Intune-managed custom and LOB apps
Q4. What update is required for Android users?
Android users are required to update to version 5.0.6726.0 or higher of the Intune Company Portal app. Older versions may cause all work apps to stop functioning.
Q5. What are the mandatory updates for iOS users?
iOS users and developers must ensure that their apps:
Are built on the latest Intune App SDK
Are using the new Wrapper tools
Unupdated iOS apps will also fail to launch.
Q6. What happens if Outlook or Teams are not updated?
If the Outlook, Teams, or OneDrive apps are not updated from the App Store or Play Store, they will not open, and work email access will be blocked.
Q7. How can an IT Admin check which users are at risk?
IT Admins can go to the Microsoft Intune Admin Center and navigate to:
Apps → Monitor → App Protection Status → User Report
This will clearly show the app version and SDK status.
Q8. Is this problem limited only to company apps?
No, this problem is not limited to custom apps. Microsoft’s core apps are also affected if they are not updated.
Q9. Can a work email be reactivated without updating?
No, work email or work apps cannot be reactivated without updating. Microsoft has made this a mandatory security policy.
Q10. What is the permanent solution to this problem?
The only solution is:
Updating all work apps to the latest version
Keeping the Company Portal updated
Regular monitoring of Intune Policies by the IT team
Q11. Will this update continue in the future?
Yes, Microsoft will continue to implement similar security updates in the future. Therefore, updating regularly has now become a mandatory process.
Q12. Is this update beneficial for data security?
Absolutely. This update is crucial for protecting corporate data, user privacy, and preventing unauthorized access, and is beneficial for companies in the long run.
