File Sharing Problems

Why Can Someone Else See My Files on Their Computer? (And How to Fix It)

Rana Garcia Oct 9, 2026 869 views

Question details

The user's personal files are unexpectedly visible on another user's computer, likely due to shared accounts, cloud synchronization, or network sharing.

Why Can Someone Else See My Files on Their Computer?

Product: Cloud Storage and Network Sharing
Device & OS: not provided
Scenario: Working on a computer and realizing that personal or sensitive files are automatically accessible from a different device used by someone else.
Observed behavior: Files created or saved on one computer are automatically appearing on another person's computer without manual transfer.

Before you start

Before making any changes or deleting files, verify exactly where these files are stored (e.g., local disk vs. cloud folder) to avoid accidentally deleting your original files permanently.

Solution 1Recommended

Check and Unlink Cloud Storage Accounts

The most common reason for files appearing on another device is being signed into the same cloud storage account, such as OneDrive, Dropbox, or Google Drive.

When multiple computers are logged into the same cloud account, any files saved in the synchronization folder will automatically mirror across all connected devices.

Identify the storage folder

Check the file path of the visible documents to see if they are located inside a OneDrive, Dropbox, or Google Drive folder.

Check the logged-in account

Click the cloud icon in your taskbar (e.g., the OneDrive cloud icon) and open the settings to see which Microsoft or cloud account is currently active.

Unlink the PC

Go to the account settings within the cloud app and select 'Unlink this PC' or 'Sign out' to stop synchronizing files to that specific device.

Warning on Deleting Files: Do not simply delete the files from the second computer while it is still syncing. Doing so will also delete the files from your cloud storage and your main computer.

Solution 2

Disable Network File and Folder Sharing

Files might be accessible if both computers are on the same local network and network sharing settings are enabled.

Solution 3

Disconnect Shared Microsoft Accounts

Using the same Microsoft account to log into different Windows PCs synchronizes settings, themes, and sometimes files automatically.

Free Microsoft Office alternative

Securely Manage Your Documents with WPS Office

If you are looking for a reliable, offline-friendly, and secure way to manage your documents without forced synchronization across devices, WPS Office is an excellent free Microsoft Office alternative. It offers powerful editing tools, full format compatibility, and independent cloud control.

1. Download and Install: Download WPS Office from the official website and run the installer on your computer.
2. Choose Save Locations: Open WPS Office and set your preferred local storage directory as the default save location to prevent automatic sharing.
3. Manage Cloud Syncing: Use the dedicated WPS Cloud tab to manually upload only the files you explicitly want to share across devices.

Fully compatible with Microsoft Word, Excel, and PowerPoint formats.Independent WPS Cloud settings let you choose exactly what to sync and share.Lightweight software that doesn't force unwanted background device synchronization.Free and easy to use with a familiar, user-friendly interface.

Frequently Asked Questions

If I delete the files from the other computer, will they be deleted from mine?

Yes, if the files are stored in a synchronized cloud folder like OneDrive or Dropbox, deleting them on one device will automatically delete them from the cloud and your main device. You must unlink the account on the other computer first before removing the local files.

How do I know if my folders are shared on the local network?

You can right-click any folder, select 'Properties', and check the 'Sharing' tab. If the network path is visible and the status says 'Shared', other users connected to your local network might be able to view or access those files.

Can someone see my files if we just use the same Wi-Fi network?

Generally, no. Simply sharing a Wi-Fi network does not give someone access to your files unless you have explicitly enabled 'Network Discovery' and 'File and Printer Sharing' in your Windows network settings.

Document & File Issues