FAQ · Project planning, cost, and security

Can Microsoft Access be used over a VPN?

Opening a file-based Access back end directly across a VPN is generally risky because latency and interrupted connections can cause poor performance and increase corruption risk.

Short answer

Opening a file-based Access back end directly across a VPN is generally risky because latency and interrupted connections can cause poor performance and increase corruption risk.

What this means in practice

A VPN secures the network path, but it does not make a wide-area connection behave like a stable local file share.

Use Remote Desktop or a virtual desktop so Access and its data run on the same local network.
Move the back-end tables to SQL Server or Azure SQL and optimize the front end for server queries.
Consider Power Apps or a web application for true browser and mobile access.
Avoid synchronizing live Access files through consumer file-sync tools.

The practical next step

The best option depends on the number of remote users, data sensitivity, connectivity, existing infrastructure, and how much of the current Access interface needs to be preserved.

This answer provides general guidance. The right recommendation depends on your application, data, users, licensing, and business requirements.