How to Share AutoCAD Files Between Office Computers Without Dropbox

Why Cloud Sync and AutoCAD Do Not Mix Well

AutoCAD DWG files look like ordinary files from the outside. They are not. Inside, they maintain complex cross-references (Xrefs), linked images, font files, and plot style tables. When you store a DWG in Dropbox and a colleague opens it, one of two things happens: either the Xrefs resolve correctly because the colleague's machine has an identical folder structure with identical paths, or they do not — and the drawing opens with missing references and blank reference layers.

Cloud sync also creates file-locking conflicts when a file is open in AutoCAD on one machine while Dropbox is trying to sync it on another. The result is either a corrupted file or a sync conflict version that requires manual resolution.

For active CAD work where multiple people touch the same drawings, the cloud sync model is a poor fit.

How CAD Offices Actually Manage File Sharing

Option 1: A shared network folder on a dedicated machine

This is the most common approach in small CAD practices. One machine — often a powerful workstation that is always on — hosts the project folders in a shared network location. Everyone else accesses files directly from that share using a mapped network drive (e.g., Z:\Projects\ClientName).

AutoCAD works well with network paths as long as:

• The share path is consistent across all machines (mapped to the same drive letter)
• Xref paths are relative rather than absolute
• The host machine remains on during work hours

Setting this up:

1. On the host machine: right-click the Projects folder → Properties → Sharing → Advanced Sharing → Share this folder
2. Set permissions for the relevant users
3. On colleague machines: open File Explorer → Map network drive → assign Z: → enter the UNC path (e.g., \\HOSTNAME\Projects)
4. Tick "Reconnect at sign-in"

Option 2: A NAS device

For practices where the "always-on host machine" approach is unreliable (machines get shut down, rebooted for updates), a dedicated NAS provides genuinely always-on file access. Synology and QNAP both have models that map to Windows as standard network drives, behaving exactly as a shared folder would from AutoCAD's perspective.

Option 3: LAN transfer for active handoffs

When one person needs to send a specific drawing package to a colleague — not for shared editing but for review, printing, or passing between project stages — direct LAN transfer is faster than any shared folder approach. No path configuration required.

Oxolan handles this directly: select the colleague, drag in the drawing folder (including Xrefs, images, and support files), the entire package transfers at full network speed. The recipient has an independent local copy on their machine ready to open.

Get Oxolan for Windows

Managing Xrefs Across Multiple Machines

The most common breakdown in office CAD file sharing is Xref path resolution. AutoCAD stores Xref paths either as absolute paths (e.g., C:\Projects\ClientName\Site\Site_Plan.dwg) or relative paths (e.g., .\Site\Site_Plan.dwg).

Best practice:

• Always use relative Xref paths in your drawings. In AutoCAD: use the ETRANSMIT command or the Reference Manager to convert absolute paths to relative before distributing drawings.
• Keep the folder structure consistent across all machines. If drawings live at Z:\Projects\ClientA\ on all machines, Xref resolution will work identically everywhere.
• When sending drawings to a colleague or external consultant, use ETRANSMIT (eTransmit) to bundle the drawing with all its Xrefs and support files into a single package.

Frequently Asked Questions

Can two people work on the same DWG file at the same time? AutoCAD locks files when they are open. If machine A has a file open, machine B can open a read-only copy. For simultaneous multi-user editing of a single model, Autodesk Revit with worksharing or Autodesk Construction Cloud is the appropriate tool.

What is the best way to send a drawing package to an external consultant? Use ETRANSMIT to create a transmittal package (zip file) that includes the DWG and all referenced files. Send via email for small packages, or WeTransfer/Dropbox for larger ones. For consultants in your office network, a direct LAN transfer is faster.

Should AutoCAD project files be stored in cloud-synced folders? For active project files that are regularly opened and edited: no. The combination of file locking and Xref path management creates too many failure modes. Cloud sync is appropriate for backup copies and archiving completed projects.

Our plot style tables and fonts are not following the drawing when shared. Why? These are support files that AutoCAD searches for in specific directories. Ensure your Support File Search Path in AutoCAD Options includes the network share location where these files are stored, or include them in transmittal packages.