A single Access ACCDB opened across several PCs is vulnerable to locking conflicts and corruption. Use a split design: tables remain in a shared back end while each person runs an independent local front end.
Why One Shared ACCDB Is Unstable
Access relies on a locking file and stable file-level communication. If users run the same front-end file from a network location, one interruption or design change can affect everyone.
Split and Deploy the Database

- Close Access on every PC and make a verified backup.
- Use the Access Database Splitter to place tables in a back-end ACCDB.
- Store the back end in a reliable shared folder where users can create, read, write, and delete the locking file.
- Give each user a separate front-end copy on the local drive.
- Relink tables if needed, then test two users editing different records.
Move the Back End to SQL Server When Needed
If a sound LAN and split ACCDB are still insufficient, migrate the tables to SQL Server or Azure SQL while retaining an Access front end where appropriate. Test data types, queries, identity fields, and permissions in staging.
Check Network Health Before Compact and Repair
Use a stable LAN rather than a synchronized consumer folder. Compact and Repair only when everyone is out and a backup exists; maintenance does not replace a split architecture.
Use WPS Office Alongside Access Exports
WPS Office does not replace the Access database engine and cannot repair an ACCDB multiuser design. Complete the split or server migration in Access.
WPS Office is a free companion for exported XLSX, CSV, DOCX, PPTX, and PDF reports. Use WPS Spreadsheets to review exported records while the live relational data stays in Access or SQL Server.

Stop a Shared Microsoft Access Database from Crashing FAQs
Should users open one network front end?
No. Each user should run a local front end while sharing only the table back end.
What permissions are needed on the shared folder?
Users normally need permission to create and remove the locking file as well as read and write the ACCDB.
Can OneDrive host the active Access back end?
An actively edited multiuser ACCDB should not depend on consumer file synchronization.
When should the tables move to SQL Server?
Consider it when concurrency, size, reliability, remote access, or security exceed safe file-sharing limits.




