External Release Notes: Desktop App for Windows v 4.1.0 (February 10, 2026)
New Features and Improvements
64-Bit Desktop App for Windows
This release upgrades the Desktop App for Windows to a 64-bit architecture. The 64-bit Desktop App can utilize system resources more effectively on supported systems, removing previous limitations and improving performance when working with large data sets and resource-intensive workloads.
The upgrade is automatic for users running the Desktop App on 64-bit Windows systems. No user action is required.
Devices running 32-bit Windows will not be upgraded.
Starting with this release, the 64-bit Desktop App becomes the default and supported version. We will no longer be adding new features or improvements to the 32-bit version. All new features and enhancements will be released only for the 64-bit version. We recommend upgrading to the latest 64-bit version of the Desktop App to take advantage of future updates and improvements.
Adaptive Block Caching (Limited Availability)
Adaptive Block Caching (ABC) is now available in Limited Availability for eligible customers on Windows.
ABC is a performance optimization feature in the Egnyte Desktop App that improves access to large files stored in Egnyte Cloud by caching only the required portions (blocks) of a file locally instead of downloading the entire file. This reduces data transfer, improves file open and save responsiveness, and allows users to work efficiently with large files while keeping data authoritative in the cloud and minimizing local disk usage.
New and improved functionality in this release includes:
- Support for Connected Folders when using Adaptive Block Caching.
- Faster thumbnail loading, improving browsing performance for visual content.
- Improved recovery notifications when Adaptive Block Caching encounters an error.
- Visual indicators for cached files which will mark fully cached files in Windows Explorer
For a complete overview of Adaptive Block Caching capabilities and current availability, refer to the Adaptive Block Caching Helpdesk article.
ABC is under Limited Availability for domains with the Specialized File Handler add-on or on the new AEC plans (AEC Essentials, AEC Elite, AEC Ultimate). To enable this feature, please reach out to the Products team.
Improved Desktop App Startup Performance
Recent changes in Windows startup behavior could cause the Desktop App to load more slowly during system startup. To address this, the Desktop App now also registers a startup task using Windows Task Scheduler, allowing it to launch more quickly and reliably.
The Desktop App remains listed in standard startup applications to ensure it still starts correctly in environments with restrictive Task Scheduler policies.
Improved Support for TIFF Files Generated by QGIS
TIFF files exported from QGIS could be skipped during upload due to being detected as incomplete. The Desktop App now correctly handles these files, aligning upload behavior with how QGIS generates and processes TIFF outputs.
Issues Addressed
Adaptive Block Caching After System Startup
Adaptive Block Caching did not become active after system startup and required a manual drive disconnect and reconnect to function. This could occur when the cache contained a large amount of data.
Preventing Folder Creation
Users could encounter errors when creating new folders via the Desktop App due to unsupported control characters in folder names. The Desktop App now correctly handles the U+202C control character, allowing folder creation to succeed.
Lingering Lock Files for RAM Concept Projects
Resolved an issue where .lock files created when opening RAM Concept files were not removed after the file was saved and closed. This could prevent other users from accessing the file and required manual cleanup. The Desktop App now correctly propagates deletion of these lock files to the cloud, ensuring files are released as expected once editing is complete.
Desktop App Could Freeze After Session End
The Desktop App could become unresponsive and require a system reboot after a session ended unexpectedly. This was caused by drives not being fully unmounted during system shutdown or session termination. The Desktop App now ensures drives are properly unmounted during shutdown, reducing the risk of freezes and preventing issues when the next session starts.
Revit File Save and Versioning Behavior
Saving Revit (.rvt) files could trigger full file uploads on each save, block subsequent saves while uploads were in progress, and prevent new file versions from being created in Egnyte. The Desktop App now correctly handles Revit save operations to ensure changes are uploaded reliably, version history is preserved, and save workflows are not blocked.
Explorer Hangs When Creating Files or Folders in Hybrid Connected Drives
Windows Explorer could become unresponsive when creating new files or folders in Hybrid Connected drives. This could occur when backend operations were delayed, causing the Desktop App to wait too long for a response.
The Desktop App now uses shorter timeouts and fewer retries for these operations, preventing Explorer from hanging and ensuring the interface remains responsive even when backend processing is slow.
Known Issues and Limitations
See the current limitations for Adaptive Block Caching (ABC).
For general Desktop App, please refer to this article for the list of known limitations.
Additional Information and Resources
How to Upgrade
Visit the Desktop App installers article to download and install the latest version of the Desktop App or update the existing app to the newest version on all the devices. It may take a few days for the latest version to propagate to all user devices. However, users can manually upgrade their app immediately after the release.