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Sign-in & Login Problems

Fix Office 365 Repeated Sign-In Prompts in FSLogix and VMware Horizon

Maira MehtabMaira Mehtab Sep 21, 2026 869 views

Question details

Users are continuously prompted to sign in to Office 365 after logging off or restarting their virtual machines because FSLogix is not preserving the authentication data.

Product
Office 365 / FSLogix
Device & OS
not provided
Scenario
Using Office 365 within a VMware Horizon virtual desktop environment managed by FSLogix profile containers.
Observed behavior
Office 365 works perfectly during the active VMware Horizon session, but prompts the user to authenticate again upon the next login, indicating profile data is lost.
Before you start

Verify that your FSLogix profile containers are properly attached upon user login and that you have administrator access to review domain Group Policy Objects (GPOs) related to Office 365.

Solution 1Recommended

Consult the Microsoft FSLogix Community on Q&A

Because this issue involves complex profile configurations and authentication data retention in a VDI environment, reaching out to dedicated FSLogix engineers is the most effective approach.

Authentication data preservation in a VMware Horizon environment requires specific handling by FSLogix. If standard configurations fail, the Microsoft Q&A community is the official channel for advanced diagnostic support.

1
Visit Microsoft Q&A

Navigate to the official Microsoft Q&A website using your web browser.

2
Search the FSLogix Tag

Click the 'Questions' tab and filter by the 'FSLogix' tag to access the dedicated community of engineers.

3
Post Your Environment Details

Click 'Ask a question' and detail your issue, making sure to include your VMware Horizon version, FSLogix version, and Office 365 build details.

Free Microsoft Office alternative

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Deploying Office 365 in VDI environments like VMware Horizon with FSLogix can lead to frustrating authentication and roaming profile issues. WPS Office offers a free, lightweight alternative that simplifies deployment, avoids complex activation hurdles, and works seamlessly out of the box.

  1. 1. Download WPS Office: Visit the official WPS website and click 'Free Download' to get the installer for your virtual machine.
  2. 2. Install on Your VDI Master Image: Run the installer on your VMware Horizon master image to make it available to all virtual desktop users.
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Frequently Asked Questions

Why does Office 365 not remember my password on VMware Horizon?

In non-persistent VDI environments, if profile management tools like FSLogix are not configured correctly, the Windows Credential Manager or specific AppData folders containing Office 365 authentication tokens are destroyed at logoff.

Does FSLogix support roaming Office 365 activation?

Yes, FSLogix Office Profile Containers are designed to roam Office 365 cached data and activation tokens, but they require specific Group Policy configurations and Shared Computer Activation to function properly.

Can I use Shared Computer Activation for Office 365 in VMware?

Yes, Shared Computer Activation (SCA) is highly recommended and often required for Office 365 in shared VDI environments like VMware Horizon to prevent users from exceeding their activation limits across different sessions.