Important Note: This entry applies to files you edit with desktop software (like AutoCAD, Adobe InDesign, Microsoft Word, etc.). It does not apply to Google Docs, Sheets, or Slides, which are designed for real-time, simultaneous editing.

The Problem: How “Overwriting” Can Happen #

Because Google Drive syncs files, a conflict can occur if two people have the same file open at the same time. This can lead to one person’s work being accidentally overwritten (or, more accurately, saved as an older version).

Here is a typical scenario:

1. User A opens a shared file (e.g., Project-Floor-Plan.dwg) from their Google Drive folder in the morning.
2. They work on it, but then leave the file open on their computer while they take a long call or go to lunch.
3. User B opens the same file (Project-Floor-Plan.dwg) on their computer, not knowing User A still has it open.
4. User B makes important changes, saves the file, and closes it. Google Drive syncs their changes to the cloud. This is now the “current” version.
5. User A returns to their computer. Their computer still has the original version they opened in the morning (before User B’s changes).
6. User A makes a small change (or just hits “Save”) and then closes the file.
7. Google Drive sees their save as the newest action, so it syncs their file (which does not include User B’s work) and saves it as the new, “current” version.
8. Result: User B’s work seems to have vanished.

How to Prevent This #

Prevention is the best strategy.

1. Rule #1: Close Files When Not in Use: This is the most important rule. If you are not actively working on a shared file (e.g., you’re leaving for lunch, ending your day, or switching to a different task), save and close the file. This allows Google Drive to sync your changes and releases the file for others.
2. Communicate with Your Team: A quick message on Google Chat (“Hey, I’m about to work on the Project Alpha plans, are you in them?“) can prevent conflicts before they happen.
3. Check Sync Status: Before opening a shared file, make sure your Google Drive for Desktop has a green checkmark or “up to date” status. This ensures you are opening the absolute latest version.

How to Fix It (If an Overwrite Happens) #

If this does happen, the work is not permanently lost. It is just stored as an older version. You can restore it using Google Drive’s Version History.

1. Stop Working: As soon as you realize changes are missing, all team members should stop working on that specific file.
2. Restore the overwritten version following this process: How to Restore a Previous File Version in Google Drive