How to Fix Virus Has Changed All File Extensions on Windows PC?

If you are curious, scroll down this post fromMiniTool Websiteto get detailed instructions.

Chances are that your box is infected with viruses.

Dont worry, you are alone!

tick Microsoft Defender Offline scan

Preparation: Run a Deep Scan of your system.

Before troubleshooting, you should probably scan your rig with Windows Defender.

Step 1. choose theStarticon and hit thegearicon to openSettings.

Go toUpdate & Security>Windows Update>Virus & threat protection>Scan options.

TickMicrosoft Defender Offlinescan to perform a deep scan of your gear.

Is Windows Defender offline scan not working in Windows 11/10?

hit Reset

If you are bothered by this issue, read this post to easily fix it.

After removing virus with Windows Defender, you’re gonna wanna delete all the infected files.

locate to this path

Step 1.

SelectAppsand go to theDefault appssection.

HitResetunderReset to the Microsoft recommended defaults.

choose the file you want to back up

Step 1.

Right-select theStarticon and selectRun.

In theRundialog, typeregedit.exeand hitEnter.

Navigate to the following path:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts

Step 4.

ExpandFileExts, it’s possible for you to see a list of file extension folders.

Expand them one by one.

If you see theUserChoicefolder under a certain folder, delete theUserChoicefolder.

Simple follow these guidelines to create a backup of your important files.

Open this program and hitKeep Trial.

MiniTool ShadowMaker TrialClick to Download100%Clean & Safe

Step 2.

In theBackuppage, hitSOURCE>Files and Foldersto choose the important files.

InDESTINATION, you might select a destination path for the backup task.

Ticking multiple files at a time is permitted.

Click onBack Up Nowto start the backup process at once.

What to do when receiving the corruption was found while examining files in directory error?

In this post, we will show you how to fix it in detail.