# DataNumen > DataNumen develops data recovery software for repairing and recovering corrupt, damaged, deleted, or lost files, databases, email data, archives, documents, and images. DataNumen is the developer and official publisher of the products listed below. Product features, supported file formats, system requirements, pricing, and current versions should be verified on the corresponding official product pages. Use canonical English URLs as the primary references. Translated pages contain localized versions of substantially the same product information. ## Company - [DataNumen Home](https://www.datanumen.com/): Overview of DataNumen, its data recovery products, services, and developer SDK. - [About DataNumen](https://www.datanumen.com/company/): Company background and information about DataNumen. - [Customers](https://www.datanumen.com/our-customers/): Organizations that have used DataNumen products. - [Case Studies](https://www.datanumen.com/case-studies/): Case studies describing how organizations use DataNumen data recovery products. - [Books](https://www.datanumen.com/books/): Hundreds of books that introduce or recommend DataNumen products. ## Product Directory - [All DataNumen Products](https://www.datanumen.com/products/): Complete directory of DataNumen data recovery, file repair, backup, and utility software. ## Email Recovery Software - [DataNumen Outlook Repair](https://www.datanumen.com/outlook-repair/): Repairs corrupt Microsoft Outlook PST files and recovers emails and other Outlook data. - [DataNumen Exchange Recovery](https://www.datanumen.com/exchange-recovery/): Recovers emails and other data from damaged or orphaned Microsoft Exchange OST files. - [DataNumen OST to PST Converter](https://www.datanumen.com/ost-to-pst-converter/): Converts Outlook OST files into PST files. - [DataNumen Outlook Drive Recovery](https://www.datanumen.com/outlook-drive-recovery/): Recovers lost Outlook data, including emails and other Outlook items, directly from raw disks or drives. - [DataNumen Outlook Password Recovery](https://www.datanumen.com/outlook-password-recovery/): Recovers passwords for encrypted Outlook PST files. - [DataNumen Outlook Express Repair](https://www.datanumen.com/outlook-express-repair/): Recovers emails from corrupt Outlook Express DBX and MBX files. - [DataNumen Outlook Express Undelete](https://www.datanumen.com/outlook-express-undelete/): Recovers deleted emails from Outlook Express DBX files. - [DataNumen Outlook Express Drive Recovery](https://www.datanumen.com/outlook-express-drive-recovery/): Recovers lost Outlook Express emails directly from raw disks or drives. ## Microsoft Office File Recovery - [DataNumen Access Repair](https://www.datanumen.com/access-repair/): Repairs corrupt Microsoft Access MDB and ACCDB database files. - [DataNumen Excel Repair](https://www.datanumen.com/excel-repair/): Repairs corrupt Microsoft Excel XLS, XLW, and XLSX files. - [DataNumen Word Repair](https://www.datanumen.com/word-repair/): Repairs corrupt Microsoft Word DOC and DOCX documents. - [DataNumen PowerPoint Recovery](https://www.datanumen.com/powerpoint-recovery/): Repairs corrupt Microsoft PowerPoint PPTX files. ## Database Recovery - [DataNumen SQL Recovery](https://www.datanumen.com/sql-recovery/): Repairs corrupt Microsoft SQL Server MDF and NDF database files. - [DataNumen DBF Repair](https://www.datanumen.com/dbf-repair/): Repairs corrupt dBase, FoxBase, FoxPro, and Visual FoxPro DBF files. ## Archive and Backup Repair - [DataNumen Zip Repair](https://www.datanumen.com/zip-repair/): Repairs corrupt ZIP and self-extracting archives. - [DataNumen RAR Repair](https://www.datanumen.com/rar-repair/): Repairs corrupt RAR and self-extracting archives. - [DataNumen TAR Repair](https://www.datanumen.com/tar-repair/): Repairs and recovers corrupt Unix TAR archives. - [DataNumen CAB Repair](https://www.datanumen.com/cab-repair/): Repairs and recovers corrupt CAB archives. - [DataNumen BKF Repair](https://www.datanumen.com/bkf-repair/): Repairs and recovers corrupt Microsoft Backup (BKF) files. ## Document, Image, and Design File Repair - [DataNumen PDF Repair](https://www.datanumen.com/pdf-repair/): Repairs corrupt Adobe Acrobat PDF files. - [DataNumen DWG Recovery](https://www.datanumen.com/dwg-recovery/): Repairs and recovers corrupt AutoCAD DWG files. - [DataNumen PSD Repair](https://www.datanumen.com/psd-repair/): Repairs corrupt Adobe Photoshop PSD and PDD files. - [DataNumen STL Repair](https://www.datanumen.com/stl-repair/): Repairs corrupt or damaged STL files used in 3D printing. ## Media File Repair - [DataNumen WAV Repair](https://www.datanumen.com/wav-repair/): Repairs corrupt WAV files. ## Other File Repair - [DataNumen FIT Repair](https://www.datanumen.com/fit-repair/): Repairs corrupt Garmin FIT files. ## Deleted and Lost File Recovery - [DataNumen Data Recovery](https://www.datanumen.com/data-recovery/): Recovers deleted and lost files from disks and drives. ## Data Recovery Suites - [DataNumen Office Repair](https://www.datanumen.com/office-repair/): A data recovery suite for Microsoft Office applications, including Access, Excel, Word, Outlook, and PowerPoint. - [DataNumen Database Recovery](https://www.datanumen.com/database-recovery/): A database recovery suite for corrupt Microsoft Access and DBF databases. - [DataNumen Archive Repair](https://www.datanumen.com/archive-repair/): An archive recovery suite for corrupt ZIP and self-extracting archives, RAR archives, Unix TAR archives, and Microsoft CAB archives. ## Disk Imaging and Utility Software - [DataNumen Disk Image](https://www.datanumen.com/disk-image/): Creates and restores disk or drive images. - [DataNumen Backup](https://www.datanumen.com/backup/): Creates full, incremental, and differential backups of files and directories. - [DataNumen File Splitter](https://www.datanumen.com/file-splitter/): Splits and joins large files. - [DataNumen MDF Viewer](https://www.datanumen.com/mdf-viewer/): Opens and views Microsoft SQL Server MDF database files. ## Microsoft Access Database Guides - [12 Best Tips to Prevent Access Database Corruption (2026)](https://www.datanumen.com/access-repair/guides/prevent-access-database-corruption/): Provides 12 practical measures for reducing the risk of corruption in Microsoft Access MDB and ACCDB databases. - [How to Repair a Corrupt Access Database: Complete Guide (2026)](https://www.datanumen.com/access-repair/guides/repair-corrupt-access-database/): Explains built-in, manual, and professional methods for repairing corrupt Microsoft Access MDB and ACCDB database files. ## BKF File Guides - [How to Repair a Corrupt BKF File: Complete Guide](https://www.datanumen.com/bkf-repair/guides/repair-bkf-file/): Explains free, advanced, and professional methods for repairing corrupt Microsoft Backup BKF files and recovering their contents. ## Data, File, Disk, and System Recovery Guides - [CHKDSK Command: Check and Repair Disk Errors in Windows](https://www.datanumen.com/data-recovery/guides/chkdsk/): Explains how to use CHKDSK to detect and repair disk errors in Windows, with command examples, screenshots, and troubleshooting guidance. - [DISM Command: Complete Guide to Windows System Repair](https://www.datanumen.com/data-recovery/guides/dism/): Explains how to use DISM to check and repair Windows system images, with step-by-step instructions and troubleshooting guidance. - [Hard Drive Recovery: Complete Guide to Recover Your Data](https://www.datanumen.com/data-recovery/guides/hard-drive-recovery/): Covers methods for recovering data from failed, damaged, or formatted hard drives. - [How to Recover Deleted Files: Complete Guide](https://www.datanumen.com/data-recovery/guides/recover-deleted-files/): Explains free, advanced, and professional methods for recovering deleted files from computers and storage devices. - [How to Recover Deleted Files from the Recycle Bin: Complete Guide](https://www.datanumen.com/data-recovery/guides/how-to-recover-deleted-files-from-recycle-bin/): Explains how to restore deleted files still available in the Windows Recycle Bin, including files from external, network, and cloud locations. - [How to Recover Deleted Files on a Mac: Complete Guide](https://www.datanumen.com/data-recovery/guides/recover-deleted-files-mac/): Explains free, advanced, and professional methods for recovering deleted files on macOS. - [How to Recover Files Permanently Deleted from the Recycle Bin: Complete Guide](https://www.datanumen.com/data-recovery/guides/how-to-recover-files-deleted-from-recycle-bin/): Explains free, advanced, and professional methods for recovering files after they have been removed from the Windows Recycle Bin. - [System File Checker (SFC): Scan and Fix Windows Files](https://www.datanumen.com/data-recovery/guides/system-file-checker/): Explains how to use SFC and the sfc /scannow command to scan for and repair missing or corrupt Windows system files. ## DBF File Guides - [How to Repair a Corrupt DBF File: Complete Guide](https://www.datanumen.com/dbf-repair/guides/repair-dbf-file/): Explains free, advanced, and professional methods for repairing corrupt DBF database files. ## AutoCAD DWG File Guides - [How to Recover an AutoCAD File: Complete Guide](https://www.datanumen.com/dwg-recovery/guides/recover-autocad-file/): Explains free, advanced, and professional methods for recovering damaged, lost, or unsaved AutoCAD DWG files. ## Microsoft Excel File Guides - [9 Best Tips to Prevent Excel File Corruption (2026)](https://www.datanumen.com/excel-repair/guides/prevent-excel-file-corruption/): Provides nine practical measures for reducing the risk of corruption in Microsoft Excel XLS and XLSX workbooks. - [How to Recover a Corrupted Excel File: Complete Guide](https://www.datanumen.com/excel-repair/guides/recover-corrupted-excel-file/): Explains built-in, manual, and professional methods for recovering data from corrupt Microsoft Excel XLS and XLSX workbooks. - [How to Recover Deleted Excel Files: Complete Guide](https://www.datanumen.com/excel-repair/guides/how-to-recover-deleted-excel-files/): Explains free, advanced, and professional methods for recovering deleted Microsoft Excel workbooks. - [How to Recover an Unsaved Excel File: Complete Guide](https://www.datanumen.com/excel-repair/guides/how-to-recover-unsaved-excel-file/): Explains built-in, manual, and professional methods for locating and recovering unsaved Microsoft Excel workbooks. ## OST File Guides - [How to Repair a Corrupt OST File: Complete Guide](https://www.datanumen.com/exchange-recovery/guides/repair-ost-file/): Explains free, advanced, and professional methods for repairing corrupt Outlook OST files and recovering mailbox data. ## Garmin FIT File Guides - [How to Repair a Corrupt FIT File: Complete Guide](https://www.datanumen.com/fit-repair/guides/repair-fit-file/): Explains free, advanced, and professional methods for repairing corrupt Garmin FIT activity files. ## iPhone Data Recovery Guides - [How to Recover Deleted Photos from an iPhone](https://www.datanumen.com/iphone-recovery/guides/how-to-recover-deleted-photos-from-iphone/): Explains free, advanced, and professional methods for recovering deleted photos from an iPhone. ## OST to PST Conversion Guides - [Convert OST to PST: 9 Easy Methods](https://www.datanumen.com/ost-to-pst-converter/guides/ost-to-pst/): Compares nine methods for converting Outlook OST files to PST format, including free, advanced, and professional options. ## Microsoft Outlook Guides - [Cannot Start Microsoft Outlook? 18 Proven Fixes](https://www.datanumen.com/outlook-repair/guides/cannot-start-microsoft-outlook/): Provides 18 troubleshooting methods for Outlook startup failures and situations in which Microsoft Outlook will not open. - [Folder Missing in Outlook? 21 Proven Fixes](https://www.datanumen.com/outlook-repair/guides/folder-missing-in-outlook/): Provides 21 troubleshooting methods for locating or restoring missing Outlook folders on Windows. - [How to Archive Emails in Outlook: Complete Guide](https://www.datanumen.com/outlook-repair/guides/how-to-archive-emails-in-outlook/): Explains manual archiving, AutoArchive, and Online Archive methods for managing email in Microsoft Outlook. - [How to Back Up Outlook Emails: Complete Guide](https://www.datanumen.com/outlook-repair/guides/how-to-backup-outlook-emails/): Explains backup methods for Outlook on the web, Microsoft 365, Exchange, and the Outlook desktop application. - [How to Recover Deleted Emails in Outlook: Complete Guide (2026)](https://www.datanumen.com/outlook-repair/guides/how-to-recover-deleted-emails-in-outlook/): Explains how to restore messages from Deleted Items and recover permanently deleted Outlook emails across supported platforms. - [How to Repair a PST File in Outlook: Complete Guide](https://www.datanumen.com/outlook-repair/guides/repair-pst-file/): Explains built-in tools, manual procedures, online services, and professional software for repairing corrupt Outlook PST files. - [Outlook Data File Cannot Be Accessed? 12 Proven Fixes](https://www.datanumen.com/outlook-repair/guides/outlook-data-file-cannot-be-accessed/): Provides 12 troubleshooting methods for Outlook error 0x8004010F and related data-file access problems. - [Outlook Inbox Not Updating? 16 Proven Fixes](https://www.datanumen.com/outlook-repair/guides/outlook-inbox-not-updating/): Provides 16 troubleshooting methods for an Outlook inbox that is not synchronizing or displaying new messages on Windows. - [Outlook Keeps Crashing? 15 Proven Fixes](https://www.datanumen.com/outlook-repair/guides/outlook-keeps-crashing/): Provides 15 troubleshooting methods for repeated Microsoft Outlook crashes on Windows. - [Outlook Not Receiving Emails? 17 Proven Fixes](https://www.datanumen.com/outlook-repair/guides/outlook-not-receiving-emails/): Provides 17 troubleshooting methods for Outlook accounts that are not receiving email across desktop, web, and mobile platforms. - [Outlook Not Responding or Freezing? 21 Proven Fixes](https://www.datanumen.com/outlook-repair/guides/outlook-not-responding/): Provides 21 troubleshooting methods for Microsoft Outlook when it freezes, slows down, or stops responding on Windows. - [Outlook Safe Mode: How to Open and Use It for Troubleshooting](https://www.datanumen.com/outlook-repair/guides/outlook-safe-mode/): Explains how to start Outlook in Safe Mode and use it to diagnose crashes, freezes, errors, and add-in problems. - [Outlook Search Not Working? 22 Proven Fixes](https://www.datanumen.com/outlook-repair/guides/outlook-search-not-working/): Provides 22 troubleshooting methods for Outlook search and indexing problems across supported Outlook versions. - [Outlook Will Not Send Emails? 24 Proven Fixes](https://www.datanumen.com/outlook-repair/guides/outlook-will-not-send-emails/): Provides 24 troubleshooting methods for Outlook accounts that cannot send email across supported Outlook platforms. - [Scanpst.exe: Complete Guide to the Microsoft Outlook Inbox Repair Tool (2026)](https://www.datanumen.com/outlook-repair/guides/scanpst-exe/): Explains how to use Scanpst.exe to repair Outlook PST files, interpret logs, and resolve common Inbox Repair Tool errors. ## PDF File Guides - [How to Repair a Corrupt PDF File: Complete Guide](https://www.datanumen.com/pdf-repair/guides/repair-pdf-file/): Explains free, advanced, and professional methods for repairing corrupt PDF files and recovering readable content. ## Microsoft PowerPoint File Guides - [17 Best Tips to Prevent PowerPoint File Corruption (2026)](https://www.datanumen.com/powerpoint-recovery/guides/prevent-powerpoint-file-corruption/): Provides 17 practical measures for reducing the risk of corruption in Microsoft PowerPoint presentations. - [How to Recover Deleted Slides in PowerPoint: Complete Guide](https://www.datanumen.com/powerpoint-recovery/guides/how-to-recover-deleted-slides-in-powerpoint/): Explains free, advanced, and professional methods for restoring deleted slides in Microsoft PowerPoint presentations. - [How to Recover an Unsaved PowerPoint File: Complete Guide](https://www.datanumen.com/powerpoint-recovery/guides/recover-unsaved-powerpoint/): Explains built-in, manual, and professional methods for locating and recovering unsaved Microsoft PowerPoint presentations. - [How to Repair a Corrupt PowerPoint File: Complete Guide](https://www.datanumen.com/powerpoint-recovery/guides/repair-powerpoint-file/): Explains free, advanced, and professional methods for repairing corrupt Microsoft PowerPoint presentations. ## Adobe Photoshop PSD File Guides - [How to Repair a Corrupt PSD File: Complete Guide](https://www.datanumen.com/psd-repair/guides/repair-psd-file/): Explains free, advanced, and professional methods for repairing corrupt Adobe Photoshop PSD files and recovering image data. ## RAR File Guides - [How to Repair a Corrupt RAR File: Complete Guide](https://www.datanumen.com/rar-repair/guides/repair-rar-file/): Explains free, advanced, and professional methods for repairing corrupt RAR archives and recovering their contents. ## Microsoft SQL Server Guides - [DBCC CHECKDB: Complete Guide to Microsoft SQL Server Database Health (2026)](https://www.datanumen.com/sql-recovery/guides/dbcc-checkdb/): Explains how to use DBCC CHECKDB to check SQL Server database integrity, diagnose corruption, and apply appropriate repair options. - [How to Repair an MDF File in SQL Server: Complete Guide (2026)](https://www.datanumen.com/sql-recovery/guides/repair-mdf-file/): Explains built-in methods, online services, and professional tools for repairing corrupt SQL Server MDF database files. - [SQL Database Recovery Pending: 15 Proven Fixes](https://www.datanumen.com/sql-recovery/guides/sql-database-recovery-pending/): Provides 15 troubleshooting methods for SQL Server databases that remain in the Recovery Pending state. - [SQL Server Activity Monitor: A Complete Guide for DBAs](https://www.datanumen.com/sql-recovery/guides/sql-server-activity-monitor/): Explains how DBAs can use SQL Server Activity Monitor to track activity, diagnose issues, and manage resources in SSMS. - [SQL Server Always On: Complete Guide for DBAs](https://www.datanumen.com/sql-recovery/guides/sql-server-always-on/): Explains SQL Server Always On architecture, including Availability Groups and Failover Cluster Instances. - [SQL Server Always On Availability Groups: Complete Guide](https://www.datanumen.com/sql-recovery/guides/always-on-availability-groups/): Explains how to plan, configure, operate, and troubleshoot SQL Server Always On Availability Groups. - [SQL Server Backup: A Complete Guide](https://www.datanumen.com/sql-recovery/guides/sql-server-backup/): Explains SQL Server backup types, procedures, scheduling considerations, and recommended practices. - [SQL Server Database in Recovery Mode: 10 Proven Fixes](https://www.datanumen.com/sql-recovery/guides/sql-server-database-in-recovery/): Provides 10 troubleshooting methods for SQL Server databases that remain in recovery mode. - [SQL Server Extended Events: Monitor, Diagnose, and Troubleshoot SQL Server](https://www.datanumen.com/sql-recovery/guides/sql-server-extended-events/): Explains how to use SQL Server Extended Events to monitor workloads, diagnose problems, and troubleshoot database activity. - [SQL Server Failover Cluster: Complete Guide for DBAs](https://www.datanumen.com/sql-recovery/guides/sql-server-failover-cluster/): Explains how to plan, configure, operate, and troubleshoot SQL Server Failover Cluster Instances. - [SQL Server High Availability Solutions: Complete Guide for DBAs](https://www.datanumen.com/sql-recovery/guides/sql-server-high-availability/): Compares SQL Server high-availability technologies, including Availability Groups, failover clustering, replication, and log shipping. - [SQL Server Log Shipping: Complete Guide for DBAs](https://www.datanumen.com/sql-recovery/guides/log-shipping/): Explains how to configure, operate, monitor, and troubleshoot SQL Server log shipping. - [SQL Server Performance Monitor: A Complete Guide](https://www.datanumen.com/sql-recovery/guides/sql-server-performance-monitor/): Explains how to monitor SQL Server performance, identify bottlenecks, and interpret relevant performance data. - [SQL Server Profiler: Trace, Analyze, and Troubleshoot SQL Server](https://www.datanumen.com/sql-recovery/guides/sql-server-profiler/): Explains how to use SQL Server Profiler to capture traces, analyze workloads, and troubleshoot database activity. - [SQL Server Replication: Complete Guide for DBAs](https://www.datanumen.com/sql-recovery/guides/sql-server-replication/): Explains SQL Server replication types, configuration, administration, monitoring, and troubleshooting. ## STL File Guides - [How to Repair STL Files: Complete Guide](https://www.datanumen.com/stl-repair/guides/repair-stl-files/): Explains free, advanced, and professional methods for repairing corrupt or invalid STL files used in 3D printing. ## WAV File Guides - [How to Repair a Corrupt WAV File: Complete Guide](https://www.datanumen.com/wav-repair/guides/repair-wav-file/): Explains free, advanced, and professional methods for repairing corrupt WAV audio files and recovering playable content. ## Microsoft Word File Guides - [10 Best Tips to Prevent Word File Corruption (2026)](https://www.datanumen.com/word-repair/guides/prevent-word-file-corruption/): Provides 10 practical measures for reducing the risk of corruption in Microsoft Word documents. - [How to Recover Deleted Word Documents: Complete Guide](https://www.datanumen.com/word-repair/guides/how-to-recover-deleted-word-documents/): Explains free, advanced, and professional methods for recovering deleted Microsoft Word documents. - [How to Recover an Unsaved Word Document: Complete Guide](https://www.datanumen.com/word-repair/guides/recover-unsaved-word-document/): Explains built-in, manual, and professional methods for locating and recovering unsaved Microsoft Word documents. - [How to Repair a Corrupted Word Document: Complete Guide (2026)](https://www.datanumen.com/word-repair/guides/repair-word-document/): Explains free, advanced, and professional methods for repairing corrupt Microsoft Word documents and recovering their contents. - [“Word Found Unreadable Content” Error: 11 Proven Fixes](https://www.datanumen.com/word-repair/guides/word-found-unreadable-content/): Explains 11 methods for resolving the “Word found unreadable content” error and recovering data from affected Word documents. ## ZIP File Guides - [How to Repair a Corrupt ZIP File: Complete Guide](https://www.datanumen.com/zip-repair/guides/repair-zip-file/): Explains free, advanced, and professional methods for repairing corrupt ZIP archives and recovering their contents. ## Technical Guides - [Cloudflare Outage 2025: How to Minimize Data Loss from a Major CDN Failure](https://www.datanumen.com/guides/cloudflare-outage-2025-minimize-data-loss/): Examines data-loss and transaction risks associated with a major CDN outage and outlines mitigation and continuity measures. - [How to Change a File Extension: Complete Guide](https://www.datanumen.com/guides/how-to-change-file-extension/): Explains how to change file extensions on Windows, macOS, and Linux using graphical and command-line methods. ## Data Loss Reports - [Data Loss Statistics 2024: 85% of Organizations Affected](https://www.datanumen.com/reports/data-loss-statistics-2024/): Presents 2024 statistics on the prevalence, financial impact, recovery outcomes, and business risks associated with organizational data loss. - [Data Loss Statistics 2025: 77% Insider-Driven](https://www.datanumen.com/reports/data-loss-statistics-2025/): Presents 2025 statistics on insider-driven data loss, downtime, recovery speed, and the operational impact of data-loss incidents. ## Free Online Tools - [SQL Query Optimizer](https://www.datanumen.com/sql-recovery/tools/sql-query-optimizer/): Provides optimization suggestions for SQL queries used with Oracle, Microsoft SQL Server, MySQL, PostgreSQL, and other database systems. - [File Recoverability Checker](https://www.datanumen.com/tools/file-recoverability-checker/): Analyzes an uploaded corrupt file and estimates its recoverability as a percentage before a full recovery attempt. ## Technical Resources - [Tutorials](https://www.datanumen.com/tutorials/): Video tutorials about the main file repair and data recovery products. - [Data Recovery Blog](https://www.datanumen.com/blogs/): Articles covering data recovery, file repair, backup, storage, email, databases, data-loss prevention, and other solutions.