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Changes in the respective versions of O&O DiskImage Premium (Changelog)

Version 22

22.6.1231 – released on 21.04.2026

Added

  • NAS/Network Credential Management: Persistent NAS credential storage via Windows Credential Manager for seamless access to network backup locations
  • NAS/Network Credential Management: Dedicated Network Credentials Dialog for entering and testing credentials when accessing network shares
  • NAS/Network Credential Management: Automatic credential reuse for mount and restore operations on NAS/UNC paths
  • NAS/Network Credential Management: Interactive prompt for NAS credentials when opening backup files on network shares
  • Backup reports now display the initiation source (e.g., manual, scheduled, hotplug) for better traceability
  • Support for more than 10 partitions and disks in backup and restore operations
  • Pre-backup BitLocker readiness check to detect locked drives before backup starts
  • Disk quota exhaustion detection with graceful error handling
  • Automatic removal of orphaned backup set entries when no valid backup files or reports remain

Improved

  • System Tray Application: Native implementation for improved system integration
  • User Interface: Debounced and asynchronous path validation for file and folder selection controls
  • User Interface: Restore buttons are now disabled when a deleted backup is selected
  • User Interface: Refined estimated time remaining display for prolonged operations
  • Scheduled Tasks: Improved compatibility with user account control
  • Scheduled Tasks: Improved handling of expired one-time task recreation
  • Performance: Reduced post-backup delay and optimized background processing
  • Localization: Audited and harmonized all localizations across resource files and supported languages
  • Localization: Improved finalization progress text translations for all languages
  • Architecture: Improved structure and reusability of components
  • Recovery Environment: Ensured temp path existence in WinPE/RE environments

Fixed

  • Restore operations: Fixed crash when restoring VHD images
  • Restore operations: Fixed errors when navigating between VHD images
  • Fixed restore dialog displaying incorrect partition list for selected backup files
  • Fixed folder structure loss for OBK file backups in restore file selection
  • Backup operations: Fixed System.Threading.AccessControl assembly load failure on USB backup
  • Backup operations: Fixed error caused by dependency version mismatch
  • Licensing: Fixed FortressMode (Windows RE) overriding normal license settings
  • Drive detection improved: Label-only fallback is now used only when detection is ambiguous
  • Fixed crash in browse dialogs when NAS/UNC paths are inaccessible
  • Improved error messages for invalid backup drives
  • Enhanced logging for RAW/unknown drive filtering

22.5.1214 – released on 10.03.2026

Added

Backup Scheduling

  • Hourly backup scheduling pattern for regular automated backups every hour
  • Continuous backup scheduling pattern with configurable intervals (from immediate to 24 hours)
  • Predefined interval selection for continuous backups: Immediate (0s), 5min, 10min, 15min, 30min, 1h, 2h, 4h, 8h, 12h, 24h
  • Missed backup catch-up functionality with extended grace period for scheduled tasks

Restore Operations

  • Restore to smaller partition feature with custom target size dialog
  • User-defined partition size selection when restoring to smaller drives

Installation and Maintenance

  • Command-line parameter /removetasks for automatic scheduled task cleanup during uninstallation
  • UI for completion tasks shown before software updates or uninstallation

Drive Detection

  • Enhanced hotplug detection with multi-criteria drive identification
  • Improved USB drive recognition for more reliable backup operations

Changed

User Interface

  • Continuous backup interval selection improved with dropdown menu instead of free-form text input
  • Better layout and alignment in scheduling dialog

Localization

  • Improved German terminology consistency throughout the application

Fixed

Scheduled Tasks

  • Execution policy no longer blocked by retention policy validation
  • Full backups now correctly triggered when required by execution policy

Security

Scheduled Tasks

  • Enhanced validation to prevent conflicts between execution and retention policies
  • Improved handling of scheduled task permissions

22.4.1206 – released on 02/04/2026

Added

Backup scheduling

  • Hourly backup pattern for regular automated backups every hour
  • Continuous backup pattern with configurable intervals (from immediate up to 24 hours)
  • Catch-up backup feature with extended grace period for scheduled tasks

Restore operations

  • Restore to a smaller partition with a custom target size dialog

Drive detection

  • Improved hot-plug detection for drive identification
  • Improved USB drive detection for backup operations

Fixed

Scheduled tasks

  • Execution policy is no longer blocked by retention policy validation
  • Full backups are now correctly triggered when required by the execution policy
  • Extended validation to prevent conflicts between execution and retention policies

Info

  • Compatible with Windows 11 and Windows 10; x86 and x64 architecture
  • Available in German, English, French, Italian, Spanish, Russian, Japanese and Chinese (Simplified)

22.3.1149 – released on 01/20/2026

Added:

  • Backup Management
    • Rename function for backup sets
    • Copy to clipboard button in the backup info dialog
    • Save and open report files directly via the Reports tab
    • Renaming of backup sets next to backup set names
  • Scheduled Tasks
    • Validation warnings when scheduled tasks become invalid due to backup folder deletions
    • Validation of retention policies and execution policies for scheduled tasks
    • User-recognizable error status for invalid scheduled tasks
    • Automatic detection of missing base backups before task execution

Fixed:

  • Backup Operations
    • Fixed unhandled exceptions for invalid drive paths (UNC paths, subdirectories) in backup target collection
    • Changes to the filename template now update the backup filename in advanced settings
    • Fixed background backup being blocked during license check
    • Fixed failures in drive backups with an invalid target directory
    • Changes to template path and filename now correctly trigger filename generation
  • Scheduled Tasks
    • Fixed errors with hotplug backups
    • Fixed scheduled tasks that stop after 1–2 minutes
    • Corrected a partition list that was not initialized in background mode
  • Task Scheduler
    • Improved validation of scheduled tasks to avoid errors
    • Enhanced detection of missing backup files before task execution
    • Better handling of tasks with missing base backups
    • Added warnings for retention and execution policy conflicts
  • User Interface
    • Fixed formatting of partition names and dependency columns
    • Improved clipboard operations with retry logic and error handling
  • Security
    • Drive Path Validation
      • Comprehensive validation for drive paths added to avoid errors
      • Improved exception handling for drive operations
      • Enhanced error logging
    • Scheduled Tasks
      • Validation added to prevent execution of tasks with missing critical backup files
      • Improved documentation of permission requirements for scheduled tasks
  • Info
    • Compatible with Windows 11 and Windows 10; x86 and x64 architectures
    • Available in German, English, French, Italian, Spanish, Russian, Japanese, and Simplified Chinese

22.2.1142 – released on 01/13/2026

Added:

  • Clipboard management
    • Support for clipboard operations during remote desktop sessions

Changed:

  • Task scheduling
    • Improved caching of task status with proper reset after operations
    • Enhanced detection of orphaned tasks to prevent marking tasks as running or about to run
    • Better handling of tasks scheduled in the past (now correctly moved to the next valid time)
  • Error handling
    • Specific handling of errors during task creation
    • More detailed error messages with guidance for users
  • Logging
    • Comprehensive logging for task scheduling operations
    • Detailed diagnostic information to troubleshoot scheduling issues
    • Extended logging for clipboard operations and retry attempts
  • File system
    • Corrected handling of excluding files and folders during backup operations

Fixed:

  • Clipboard operations
    • Resolved the “OpenClipboard failed” error when using remote desktop software
    • Clipboard operations now work with remote desktop tools
  • Task scheduling
    • Tasks scheduled in the past are now correctly moved to future dates
    • Fixed premature deletion of one-time tasks before execution
    • Fixed task status caching not being reset after task deletion
    • Valid tasks are no longer incorrectly identified as orphaned
    • Fixed missing user notifications when task creation failed
  • Error handling
    • Fixed missing error dialogs when scheduled task creation failed
    • Users now receive clear error messages when task operations fail
    • Improved guidance on required administrator privileges
  • Info
    • Compatible with Windows 11 and Windows 10; x86 and x64 architectures
    • Available in German, English, French, Italian, Spanish, Russian, Japanese, and Simplified Chinese

22.0.1122 – released on 11/25/2025

Added:

  • Backup Mounting and Management
    • Backups can be mounted as drives under Windows
    • Mounted backups under Windows can be removed
    • Backups can be converted to virtual drives in VHDX format
    • Retention policies for the maximum number of backups can be defined
    • Individual backup files can be manually deleted from backups
    • Automatically assign available drive letters when mounting backup images
    • Improved handling of encrypted images with better password security
    • Streamlined mounting process with fewer steps
  • Report Management
    • View and manage all backup reports in one place
    • Display detailed information about backup operations
    • Delete old or unnecessary reports with confirmation
    • Reports are automatically loaded when the application starts
    • View reports for each backup set in the backup management screen
    • Reports are created for failed or canceled backups
  • Boot Media
    • The boot medium can now be used independently of the original hardware (e.g., when changing computers)
  • FortressMode Logging
    • Automatic logging when running in Windows Recovery Environment (WinRE)
    • Log files are saved to RAM disk (X:) during recovery operations
    • Logs are automatically copied back to the original location when exiting
    • Comprehensive documentation for troubleshooting recovery scenarios
  • Backup Validation
    • Improved validation dialog that automatically detects file type (VHD/VHDX or backup files)
    • Validation now uses the correct method based on the file being checked
  • Backup Set Management
    • Detection of incomplete backup sets (missing base backup)
    • Restore option is disabled for backup sets without a complete base backup
    • Clear status indicators showing backup set validity
    • Ability to view backup information even when restore is not possible
  • User Experience
    • Helpful hints when a drive is too large to restore to available targets
    • Suggestions for alternative file-based restore options
  • Settings Management
    • New tracking system for settings changes
    • Confirmation dialog when applying backup settings globally

Changed:

  • Backup Strategy
    • The backup strategy in saved tasks can now be changed retroactively
  • Compression
    • ZIP-Deflated compression method is automatically replaced with standard compression for disk images, as the method is only valid for file backups
    • Changed compression algorithm for disk images to LZNT1 for better performance
  • Hardware Detection
    • External USB drives are detected more reliably
  • Performance
    • Startup process optimized
    • Faster application startup, especially with slow USB devices connected
    • Background scanning of drives to prevent interface freezing
    • Improved responsiveness during backup and restore operations
  • User Interface
    • Optimizations in dark mode
    • Headers are now readable in dark mode
    • Better visual feedback during operations
    • Improved layout and text display in backup management screens
  • Translations
    • Fixed French translations where “Backup” was incorrectly translated
    • Corrected multiple French translation errors
    • Improved handling of localized text throughout the application
  • Licensing
    • Updated license system with improved validation
    • Better handling of different machine IDs in recovery mode
  • Installation
    • Improved installation process with better component selection
    • Updated installer packages for Windows Recovery Environment
    • Corrected company name for Laplink OEM builds
  • Backup Operations
    • Improved calculation of space needed for backups
    • Better handling of excluded files and folders in size calculations
    • More accurate space requirements shown before starting backup

Fixed:

  • FortressMode
    • Creation of fortress mode corrected
    • Licensing in fortress mode corrected
  • Updates
    • Update checks were not performed under certain circumstances
  • Critical Fixes
    • Fixed application freeze on startup when slow USB devices are connected
    • Fixed crashes related to missing backup files
    • Improved error handling to prevent unexpected application closures
  • User Interface
    • Fixed text display issues in backup size information
    • Corrected layout problems in various dialogs
    • Fixed missing links in help documentation
    • Improved display of deleted backups in the backup list
  • Domain Users
    • Fixed detection of backup privileges for domain user accounts in scheduled tasks
  • Resource Issues
    • Fixed inconsistencies in displayed text and labels
    • Corrected typographical errors in user interface
    • Fixed application title display issues
  • Installation
    • Fixed errors during custom installation
    • Corrected issues with Windows shell integration

Removed:

  • Optical drives (CD/DVD) are no longer shown in backup source selection

Security:

  • Enhanced password security for encrypted backup images using secure memory storage
  • Improved authentication checks for domain user accounts

Info:

  • Compatible with Windows 11 and Windows 10; x86 and x64 architectures
  • Available in German, English, French, Italian, Spanish, Russian, Japanese, and Simplified Chinese

Version 21

Version 21.0.1094 – released on 03.07.2025

Added:

  • New online help system
  • Accessibility optimizations

Changed:

  • Target directory is now updated when modifying destination paths in the settings
  • Scheduling in Fortress Mode is no longer possible, as it was not meaningful

Fixed:

  • Issues during restoration in Fortress Mode resolved
  • RAM disk is now hidden in Fortress Mode
  • System no longer failed to shut down automatically after backup
  • Duplication had to be started twice under certain conditions

Info:

  • Compatible with Windows 11 and Windows 10; x86 and x64 architectures
  • Available in German, English, French, Italian, Spanish, Russian, Japanese, and Simplified Chinese

Version 21.0.1074 – released on 28.05.2025

Fixed:

  • Changed drive mappings in Fortress Mode prevented license detection
  • Shutdown or restart in Fortress Mode could trigger an error message
  • Loading screen in Fortress Mode was too small

Info:

  • Compatible with Windows 11 and Windows 10; x86 and x64 architectures
  • Available in German, English, French, Italian, Spanish, Russian, Japanese, and Simplified Chinese

Version 21.0.1073 – released on 27.05.2025

Added:

  • When creating a boot medium, removable drives can now be selected immediately

Changed:

  • In Fortress Mode, the application now opens in full-screen mode
  • Closing in Fortress Mode allows an immediate restart or shutdown of the system
  • Opening the main application from the notification area has been improved

Fixed:

  • Backup drives are now recognized as unreachable more quickly
  • The handling of the exclusion list in drive backups has been corrected
  • The notice about a parallel installation of the Professional Edition is now displayed after updates
  • Invalid drives can no longer be selected during duplication
  • The opening of the main application from the system tray application has been improved

Info:

  • Compatible with Windows 11 and Windows 10; x86 and x64 architectures
  • Available in German, English, French, Italian, Spanish, Russian, Japanese, and Simplified Chinese

Version 21.0.1061 – released on 13.05.2025

Added:

  • Integrated support for backing up individual files
  • A splash screen now appears when the application starts
  • O&O DiskImage Professional and Premium Edition can be installed side-by-side
  • The installer now informs you if an existing O&O DiskImage Professional Edition is detected
  • Selection list now includes *.avhd and *.avhdx files
  • Orphaned tasks in Windows Task Scheduler are detected and removed

Changed:

  • Revamped interface for managing backups
  • The boot-media creation tool can now run only one instance at a time
  • The backup-technology option is hidden when performing a file backup
  • Boot-medium creation is no longer offered in Fortress Mode
  • Backups are synchronized between the base system and Fortress Mode

Fixed:

  • Corrected calculation of the next scheduled backup time
  • Special drive types (e.g., RAM disks) are now detected properly
  • Deleting backup tasks in Fortress Mode no longer triggers an error
  • Unrealistically high write speeds are now intercepted
  • Corrected processed data size during file backup restoration
  • Eliminated error messages caused by missing DLLs in Fortress Mode
  • Corrected license management in Fortress Mode

Info:

  • Compatible with Windows 11 and Windows 10; x86 and x64 architectures
  • Available in German, English, French, Italian, Spanish, Russian, Japanese, and Simplified Chinese

Version 21.0.1031 – released on 16.04.2025

Changed:

  • O&O Syspectr can now be integrated into the boot medium if needed
  • The layouts of O&O BuildPE and O&O ShellConfig have been standardized and revised

Fixed:

  • O&O BuildPE now starts in the preset language and respects the selected dark mode
  • The creation of the boot medium has been corrected
  • Reading files from VHD/VHDX backups has been corrected
  • Occupied drives were not offered during cloning; now they are

Info:

  • Compatible with Windows 11 and Windows 10; x86 and x64 architectures
  • Available in German, English, French, Italian, Spanish, Russian, Japanese, and Simplified Chinese

Version 21.0.1021 – released on 09.04.2025

First public version

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