If you frequently lose files on your PC, sometimes without even knowing why, worry not. Fortunately, there are effective methods to help you overcome the issue of missing files and make important ones undeletable but accessible. This way, you won't lose any precious documents or files on your computer. Let's see how to make files undeletable in Windows 11/10/8/7.

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Solutions That Work Step-by-Step Troubleshooting
Solution 1. Deny Permission Right-click the file > Select "Properties". On the "Security" tab, click "Edit" to modify permissions > Choose "Add"...Full Instructions
Solution 2. Create Backup Backup your files in Windows using the top automatic backup software - Todo Backup Tool...Full Steps
Solution 3. Use File Recovery Software Use file recovery software to restore lost files after formatting or deletion from your PC...Full Steps

Method 1: Deny Delete Permission to Make Files Undeletable

    Right-click the file or document on your computer and select "Properties." On the "Security" tab, click "Edit" to change permissions > select "Add" and type in "Everyone." Click "OK," then select the group and change the "Full Control" permission to "Deny." Click "Yes" to confirm.

Then try deleting the file, and you'll get a “Access is denied” message. Once you see that, you can't delete the file. The next time you want to delete it, change Full Control for Everyone to Deny.

Method 2: Create a Backup to Prevent File Deletion

If you need a more direct way to prevent your files from being deleted, the best automatic backup software – Todo Backup can back up your files, even automatically backing up files in Windows. If you have a backup, you can restore files directly from the backup without losing anything when you accidentally delete them. Read on to learn how to automatically back up files to an external hard drive so that they cannot be deleted.

Create file backup to prevent files from being deleted

Method 3: Make Files Undeletable with File Recovery Software

With a professional file recovery software, you can effectively restore lost files even after formatting or deleting them from your computer. Here, you can try a 100% secure and risk-free file recovery tool - tools Data Recovery Wizard. It helps perform formatted recovery, recover emptied Recycle Bin, recover permanently deleted files, lost partition recovery, system crash recovery, virus attack recovery, and RAW partition recovery in simple steps, making your files undeletable.

Download it now for free and let it help you recover your data safely and promptly.

Step 1: Choose a location and start scanning

Launch the Data Recovery Wizard, and hover the mouse over the partition/drive where the deleted files were stored. Click “Scan” to look for the lost files.

Select the location from which you deleted your files

Step 2: Select the files to be restored

Once the scan is finished, select the deleted files you want to recover. You can click on the Filter to display only the file types you need. If you remember the name of the file, you can also search for it in the “Search for files or folders” box – this is the fastest way to locate your target file.

Select the files to recover

Step 3: Preview and recover the deleted files

Preview the recoverable files, select the ones you want to restore, and click “Recover” to save them to a new location instead of the disk where the data was lost.

Recover Deleted Files