Backup Client Release Notes (Windows)

Release Version 9.2.1.851

Improvements

• Vulnerable dependencies in third-party libraries were upgraded.
• The authentication flow was updated to strictly follow the server API sequence, ensuring correct challenge handling and improved security.
• The Backup Client now detects bzdone lines containing multiple HGUIDs. It identifies affected FGUIDs, determines which files are still present on disk, and re-uploads them with a new, valid FGUID. For files that are no longer present, the Backup Client generates new x lines to mark them as expunged. This enhancement improves backup accuracy and ensures un-restorable files are correctly marked.
• After opening a Backblaze B2 session, the Computer Backup Installer now closes the session when it is no longer needed. This change improves overall session management and resource efficiency.

Bug Fixes

• A Safety Freeze alert was implemented for Backup Clients without a private encryption key (PEK) set, ensuring that users are notified of prolonged backup issues.
• An issue was resolved where duplicate installations created multiple backups.
• An issue was resolved where the auto-update process forced an unexpected system restart without warning.
• Logging was optimized to prevent excessive log file growth when attempting to back up unreadable cloud-based files. Behavior was adjusted to avoid backing up Backblaze B2 mounts for improved efficiency.
• Excessive and incorrect logging was resolved, reducing log file bloat and improving performance.
• An issue was resolved that caused a version servlet to reject valid data from the Backup Client.
• A mismatch was resolved in the cross-platform Backup Client related to version parsing. The Backup Client now handles version compatibility better to prevent these errors.
• Password generation was improved in the command-line installer to align with updated security best practices.
• A parameter handling issue was resolved that caused duplication and incorrect order in Computer Backup Installer commands.
• An issue was resolved that caused an “invalid login” error for users with weak account passwords.

Release Version 9.2.0.835

Improvements

• Restrictions were removed that prevented certain large files from being backed up.
• The threading mechanism was optimized to enhance performance and efficiency in data operations.
• Files with missing chunks are now automatically repaired when possible.

Bug Fixes

• Unnecessary files were removed to prevent the drive from reaching capacity.
• An issue was resolved that caused the Next button to briefly appear when the installer is re-run.
• An issue was resolved that caused an unresponsive Close button to appear on the "Install Complete" modal.
• An issue was resolved that caused the app to freeze and display an error when logging in with a single-sign on (SSO) account.
• An issue was resolved where selecting the wrong SSO caused the client to time out.

Release Version 9.1.0.833

Improvements

• The process to check for existing installations was improved to prevent corrupt installations.
• The Windows Backup Client installer was enhanced with performance and reliability optimizations for smoother installations and upgrade and downgrade experiences.
• Various security improvements were made to the Windows Backup Client installer.

Bug Fixes

• An issue was resolved that caused an unnecessary Windows User Account Control (UAC) modal to appear when auto-updates are enabled.
• An issue was resolved that caused errors when installing the Windows Backup Client for Groups.
• An issue was resolved that caused the Windows Backup Client installer to fail when used with Microsoft Office 365 Single Sign-On (SSO).
• An issue was resolved that caused an installation to fail on systems that do not use C: as a boot drive.
• An issue was resolved that caused an error to occur when a custom installer was already used or expired.
• An issue was resolved that caused the Backup Client to freeze and display an error during installation when logging in with an SSO account.
• An issue was resolved that prevented the Backup Client from installing when a gift code was used.

Release Version 9.1.0.817

Improvements

• Improvements were implemented to strengthen the Windows Installer, laying the groundwork for a future installation.
• cURL version 8.9.1 is now supported.
• The "Skipped Files" process was enhanced for better performance and more efficient file handling.
• The Backup Client was upgraded to support OpenSSL v3.3.2.

Bug Fix

• An issue was resolved that caused the Backup Client to crash when the number of top-level directories exceeded 200,000 entries.

Release Version 9.0.2.801

Bug Fix

• An issue was resolved where files were prematurely expunged before the license expired.

Release Version 9.0.2.789

Improvements

• Improvements were made that enhanced security.
• Improvements were made to error messages to provide more information during installation.

Bug Fixes

• A problem with the installer, where it would become unresponsive, was resolved.

Release Version 9.0.2.783

Improvements

• Notifications and the process for handling the end-of-life status of an installed Backup Client version were improved through various enhancements.

Bug Fixes

• The correct version history is now displayed in the Control Panel after a Backup Client upgrade.
• An upgrade link now appears so a user can upgrade to “Forever” version history.
• Version History text and stats persist after upgrading the Backup Client.
• Non-functional updates were made to the Computer Backup Installer.
• Help Center text and a link was added to the Backup Client Control Panel for Windows 11.

Release Version 9.0.1.777

Improvements

• A Show Password button is now displayed on the “Private Encryption Key” window. The warning message text was also updated.
• The process for handling the end-of-life status of an installed client version was improved through various enhancements.

Bug Fixes

• Files that contain a resource fork no longer fail when scheduled for backup.
• Version History settings are now retained after an “Inherit Backup State” is completed.
• Additional SHA-1 checks were implemented to prevent corrupted backup files before uploading to servers.
• If a large file existed that required making a full copy of that large file to back up and a user deletes that large file from their computer, a “Low on Disk Space” error is no longer returned.

Release Version 9.0.1.767

Improvements

• Restore logs dynamically update to be readable while a restore progresses.

Bug Fixes

• Log files are now removed periodically to prevent them from increasing indefinitely and filling up drive space.