Here at Nerdio, we’ve been entrenched in Azure Virtual Desktop (AVD) since the very beginning, which means we’re chock-full of knowledge about Microsoft’s recommended profile solution for AVD: FSLogix.
FSLogix may be new to many MSPs who haven’t worked with Azure or AVD, so we’re always compiling tips and helpful ways to train MSPs on what FSLogix is and how to troubleshoot it. The best route for training we’ve found with FSLogix is to start with breaking down its anatomy and the related common troubleshooting issues for each component.
What is FSLogix?
FSLogix is a robust profile solution for non-persistent desktops (like AVD hosts). It is Microsoft’s recommended profile solution for AVD and moves MSPs away from “roaming” profiles to a profile that is mounted and feels like a local profile.
3 Moving Parts
FSLogix’s name may be more intimidating than what is really under the hood. There are essentially three pieces at its core.
Most users decide to use one of two FSLogix storage options: either a file server VM (virtual machine) or Azure Files. A file server VM requires the user to manage the underlying server object, and it needs to be in the same region as the host. Azure Files uses Azure Storage, which is an IaaS (Infrastructure-as-a-Service) service, so the underlying assets don’t need to be manually managed. Using premium storage is recommended for both a file server VM and Azure Files. Learn more about these options in this video.
You’ll find when adding an account in Nerdio Manager for MSP that you are required to establish a new, or pointing to an existing, FSLogix storage path. This Server Message Block (SMB) share is where the FSLogix profile containers will be stored. Permissions are critical to this share and are the most common support request we see with FSLogix. You can find more information about FSLogix permissions via
The performance of your storage is a major player in FSLogix performance. Slow login times are a common symptom of under-performing storage. If Azure Files is used for this storage, we always recommend using premium storage and perhaps auto-scaling your Azure Files storage to optimize through
The second piece of the FSLogix puzzle is the application. We rarely see a support issue related to the FSLogix application itself and more often we’ll see a misconfiguration of the FSLogix settings.
The biggest things we see MSPs struggle with related to the application are updating the registry settings and keeping the application updated to the latest version.
Registry settings for the FSLogix application are used to provide FSLogix settings and point FSLogix to your storage location.
Nerdio can then install FSLogix (latest GA version) with your settings upon AVD host creation, taking the worry out of keeping FSLogix updated and retaining your settings via our automation. Combine this with Auto-healing features available for Auto-scale (Including FSLogix health checks) and the application piece of FSLogix is no sweat.
Yes, this is all leading up to the user profile, I promise! With storage established and FSLogix running on the AVD host, all you need now is users.
Upon a user’s first login, a profile container will be created in the storage location designated.
When a user logs in, the FSLogix app will go to the storage location and mount that user’s profile container to the AVD host.
Common support issues we’ll see related to profile containers include the following:
- Profile locked due to the file being in use
- Can be caused by a hung session/logoff
- If using Azure Files and Nerdio Manager, this can often be easily solved by closing the file handle via Nerdio Manager
- Profile (VHD/VHDX) reached FSLogix’s default 30GB maximum size
- Symptoms are “full disk” errors, unable to receive new mail in Outlook
- FSLogix has a 30GB default size limit for containers. This can be expanded via registry setting
- Profile Corruption
- If the VHD/VHDX file were to be corrupted, FSLogix may rename the file with a “CORRUPT” in the file name.
- May be resolved by restoring a backup of the VHD/VHDX from a known working date
FSLogix is a great solution to use alongside Azure Virtual Desktop, but it can be a complex tool. Here at Nerdio, we can help you learn how to use it. Read our blog on ‘5 Things MSPs Must Know about FSLogix’ for additional insights or contact us to discuss your MSP’s unique needs.