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Important
An upcoming change to Windows, included in the April 2026 Windows Server update, the default Kerberos encryption type is changing from RC4 to AES-SHA1.
File shares hosting FSLogix containers that aren't upgraded to AES-SHA1 might have access issues after this change is applied. To avoid disruption, complete the upgrade to AES-SHA1 before installing the update.
Customers who have already upgraded to AES-SHA1 aren't affected.
For more information, see the FSLogix blog: Action required: Windows Kerberos hardening (RC4) may affect FSLogix profiles on SMB storage.
FSLogix is a product that is made up of two (2) distinct applications. The core application known as FSLogix Apps is the primary component that enables user profile virtualization in virtual desktop environments. FSLogix also provides a supplemental application for application rule set editing.
FSLogix Apps (Core Product)
FSLogix Apps installs two (2) Windows services and three mini-filter drivers that enable all FSLogix components. The install guide provides a step-by-step process for both manual and unattended installations. Once installed, review the FSLogix configuration guides for profile and ODFC containers.
FSLogix Apps services
- Attaching / detaching Profile or Office containers
- File system redirects between the user's profile and the appropriate container
- Processing rule files
- Processing redirections.xml
- Reads registry configuration data
- Interacts with Windows Credential Manager
- Interacts with SMB Storage locations
FSLogix Cloud Caching service
- Dependent on FSLogix Apps Services
- Interacts with SMB and Azure Storage locations
- Responsible for Cache and Proxy file locations