Extract damaged tables, records, queries, indexes, and relational links from corrupted Microsoft Access databases (.mdb and .accdb) using the same internal recovery engine: online in any browser from a smartphone, tablet, Mac, or PC, or 100% locally on Windows with Access Repair Kit.
Use on Android, iOS, macOS, Linux, or Windows
The files will be automatically deleted from the server in 10 days.
Scan and preview recoverable Access data on your Windows computer. Saving recovered data requires a license from $25.
Download for Windows PC Requires Microsoft Access 2003 or later on WindowsProgress
Please wait while the file is repaired
Both our web application and the downloadable Access Repair Kit for Windows execute the same low-level Jet/ACE page reconstruction algorithm. Because recovery depth is identical, you can select the workflow that matches your current device, file size, and security policy:
Supported Access Versions: Legacy Microsoft Jet (.mdb from Access 95, 97, 2000, XP, 2003) and modern Microsoft ACE (.accdb from Access 2007, 2010, 2013, 2016, 2019, 2021, 2024, and Microsoft 365).
| Decision Criterion | Online Browser Recovery | Access Repair Kit (Windows) |
|---|---|---|
| Supported Devices | Phones, tablets, Mac, Linux, Windows | Windows 11/10/8/7 and Server PCs |
| Internal Engine | Core Jet/ACE byte-level scanner | Identical Jet/ACE byte-level scanner |
| Data Privacy | Encrypted upload to cloud server | 100% local disk (never leaves PC) |
| Database Size | Small to medium databases | Any size up to the 2 GB Access cap |
| System Dependencies | Zero local software or drivers needed | Uses local Windows DAO/ACE to write output |
| Pricing Model | $10/1Gb of file payment before download | Free preview; license from $25 to save |
Choose Online Browser Recovery when: You are working from an Android phone, iPhone, iPad, Mac, or Chromebook, your Windows PC lacks Microsoft Access or DAO database drivers, or you want a single file repaired in the cloud without installing software.
Choose Access Repair Kit on Windows when: Your database holds sensitive financial, medical, HR, or client records under strict NDA/GDPR/HIPAA rules that forbid cloud uploads, or your file approaches the 2 GB limit and scans faster on a local SSD.
Before scanning your file online or in Access Repair Kit, run three quick checks in your file manager and avoid actions that overwrite surviving data pages.
.ldb / .laccdb locks, >0 KB check)
Database_be.accdb on a shared server). Always scan the larger Back-End file that holds the physical tables..mdb or .accdb file into a clean local folder so lingering .ldb or .laccdb lock files and active cloud sync agents do not block reading.| Action to avoid | Why it matters |
|---|---|
| 1. Editing or adding records after accidental deletion: | Deleted rows remain physically recoverable inside 4 KB data pages only until new write operations overwrite those free page slots. Stop all modifications immediately and scan a copy of the file. |
| 2. Saving output over the original damaged file: | Writing reconstructed output into the broken source path or onto a failing USB flash drive permanently destroys unrecovered byte chains. Both our online service and Access Repair Kit read your source file non-destructively and create a brand-new database file. |
| 3. Running recovery inside an active OneDrive or Dropbox sync folder: | Background cloud synchronization locks database pages mid-write; always save your recovered database to a local non-synced folder first. |
Microsoft Access stores structural definitions inside hidden system catalog tables (MSysObjects, MSysACEs, and MSysRelationships) near the start of the file, while your actual business records sit inside independent 4 KB data pages (or 2 KB pages in Access 97) across the container.
When an interrupted network write or power drop corrupts the file header or breaks a pointer inside MSysObjects, Microsoft Access aborts startup immediately. Our recovery engine bypasses the broken system catalog altogether, scanning raw 2 KB and 4 KB data pages byte-by-byte to extract your tables and records directly.
| Access Error Code or Symptom | What Is Broken Inside the File | Recovery Forecast | How the Engine Fixes It |
|---|---|---|---|
Error 3343: Unrecognized format. |
Corrupted header or MSysObjects table.
|
High (85–100% of tables). | Bypasses header and scans raw 4 KB data pages. |
Error 3011: MSysDb not found. |
Damaged root system catalog pointer. | High. | Rebuilds schemas from page signatures. |
Error 3197 / 3167: Record deleted. |
Broken row pointer or Memo/OLE chain. | High. | Isolates damaged offset and saves intact fields. |
Error 3033: No permission (.mdw). |
Corrupted MSysACEs security or missing .mdw.
|
High. | Reads raw table pages bypassing ACL locks. |
| Database hits 2 GB size limit. | 32-bit internal offset overflow. | High. | Extracts data streams beyond locked header. |
| Deleted records or dropped tables. | Rows flagged as deleted in page headers. | High if unoverwritten. | Recovers uncompacted rows from raw pages. |
Select either the browser workflow or the local Windows software workflow below. Both require only basic computer skills:
.mdb or .accdb file from your smartphone, tablet, Mac, or PC.
.mdb or .accdb file.
MS Access database repair tool
Access Repair Kit is arguably the best MS Access repair tool available on today's market. Combining a highly efficient database analysis and recovery core with a simple, clean and easy-to-understand interface, the product enables users to efficiently restore their Access databases after the most serious data corruption accidents. The program's intelligent engine takes advantage of a set of complex proprietary algorithms to identify and extract valuable elements of damaged mdb and accdb files to a safe location on the user's hard drive.
This MS Access database repair tool features a clean and lightweight wizard-based interface that is completely suitable for users with and without experience. The wizard almost completely automates the process of data recovery and makes it a matter of a few mouse clicks - even if the user has absolutely no hands-on experience with the program and doesn't know how to repair Access database file data. The program comes with a simple database viewer that lets users see recoverable items and get a general idea about the scale of damage inflicted to the file.
This Microsoft Access repair tool supports recovery from standard mdb and accdb database files of any size and structure and repairs the most important database elements, including tables, table data, queries, links between tables and even previously deleted records. Due to Access format limitations, the software does not recover database forms, macros, modules and password-protected files.
This Microsoft Access repair tool can save regular users an ample amount of time and money, since they won't need to look for and hire an expensive specialized service to restore a single database file. Corporate users and IT professionals dealing with the consequences of MDB file corruption on a regular basis will benefit from the dramatically reduced downtime and speed of recovery offered by the product.
The Access file repair software does not recover:
System requirements:
The recovery engine extracts all local tables physically stored inside your .mdb or .accdb file and preserves linked table definitions, but records residing on an external SQL Server or SharePoint instance are stored on that remote server rather than inside the local Access file. If your local database only held ODBC links, reconnect those links in a new Access file directly to your SQL server.
System.mdw) or shows Error 3033?In legacy Access 97–2003 databases, User-Level Security permissions are enforced through the MSysACEs system table and an external .mdw workgroup file. Because our recovery engine scans raw data pages directly and writes recovered tables into a fresh database container without copying restrictive MSysACEs locks, you can recover your tables and records without needing the old .mdw file.
Yes. When reconstructing tables, the engine preserves the exact existing AutoNumber integer values on every recovered record rather than re-numbering rows sequentially, ensuring that foreign keys in related child tables continue pointing to the correct parent records.
The Microsoft Jet/ACE engine relies on continuous byte-range locking across 4 KB pages. Brief Wi-Fi drops, VPN timeouts, SMB opportunistic locking glitches on NAS drives, or background cloud sync tools (OneDrive, Dropbox, Google Drive) interrupt multi-user page writes and corrupt MSysObjects. To prevent repeat failure, split production databases into a server Back-End over wired Ethernet and keep Front-End interface files on each user's local drive outside cloud-synced folders.
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perfect
Very good
ok
good
Excellent
Good Job
awesome
good
Very good
Excellent
The program was able to remove unwanted changes are made to the file that caused damage.
After trying to change the table structure using a third-party program, my database became corrupted. Now, when opening a file in Microsoft Access, it throws an error like "an unrecognized database format." Several tables were restored by using this site, but not the entire database. Failed to restore macros and forms.
good
plus: Italian support
minus: costs $10 per file
good app
okay
nice
perfect service
great!!!
Excellent service, thank you very much!!!!
very nice
