This question comes up all the time in comments on Reddit, YouTube, etc. so I'm putting this "condensed" answer here so I can quickly copy and paste it when needed:

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This comes up a lot because people naturally assume an Access database can be shared the same way as an Excel or Word file. Unfortunately it doesn't work like that. Access is a file-based database and it expects a stable network connection to the data file. Trying to run the database directly from file syncing services like OneDrive, Google Drive, or Dropbox is one of the most common mistakes people make. Those tools constantly sync and lock files in the background, which eventually leads to database corruption. You can store backups there, but don't run the live database from them.

If you need multiple people using the database remotely, you generally have a few realistic options. If your organization already uses SharePoint, you can move your tables to SharePoint lists and keep the Access front end locally, although I usually only recommend that if you're already invested in SharePoint. A more scalable approach is to split the database and move the data to SQL Server (often hosted online) while each user runs their own copy of the Access front end connected to it. If you don't want to redesign anything and just need remote access to the same machine, Remote Desktop (like Chrome Remote Desktop) works fine for a single user or small situations. There are also hosted environments specifically designed to run Access databases in the cloud where multiple users can connect to the same system.

I talk about this topic all the time in my videos because this exact question comes up constantly. People want to treat Access like a shared Office document, but it's really a database system and needs to be set up a little differently. Once you understand the common ways to handle remote users, it becomes much easier to decide which approach makes sense for your situation.

Which option is best really depends on how many users you have, how much setup you're willing to do, and whether you want to keep Access as the interface or eventually move toward a web-based system. There isn't one single answer, but these are the paths most people end up taking.
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