If the utility fails, your database might be suffering from severe hardware-level corruption or file system errors. In these cases, you might need to: Import to a New DB
Are you running a Windows operating system?
Ensure that no users or background applications are trying to access the database. If a .ldb or .laccdb locking file exists in the database directory, wait for it to disappear or delete it manually after confirming all users have logged out. Step 3: Launch the Utility
Before running any executable downloaded from the internet, always run a full virus scan with Windows Defender or a reputable antivirus program. Installation Steps: Download the ZIP file containing jetcomp.exe . jetcomp.exe download
If the utility fails to open the source file, ensure that no other user or background process is currently accessing the database. Check for hidden .ldb (lock) files in the same directory and delete them if the database is closed. "Not a valid database"
: Type or paste the full path and a new filename for the repaired file in the Database to Compact Into (Destination) field.
JetComp.exe represents a legacy but still valuable tool for maintaining older .mdb databases created with Microsoft Jet database engine versions 3.x and 4.x. Its unique ability to compact databases without first opening them makes it more effective for certain corruption scenarios than Microsoft Access’s built-in utilities. If the utility fails, your database might be
If Jetcomp.exe fails, the corruption is likely too severe, and you will need to restore from a backup or use specialized third-party repair software.
Leave this blank unless you have specific guidance from a database administrator.
: A commercial tool for severely corrupted .accdb and .mdb files, capable of restoring database objects even after other methods fail. If the utility fails to open the source
One of the best features of this utility is its simplicity. It’s a "portable" app, meaning you don't even need to install it. Source Database : Select your corrupt Destination Database : Choose a new name and location for the repaired file.
A: To compact Access databases from a 64-bit process or to handle .accdb files, you need the Office 2010 driver and more modern approaches.