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Stop running the game or installer, stop signing in to sensitive accounts on that PC, then remove the software and scan the entire computer. Uninstalling the visible game alone does not establish that Windows is clean. Record the Windows Security detection first, use Windows’ normal uninstall controls, update Defender security intelligence, run a Full scan, and use Microsoft Defender Offline if the detection returns or cannot be removed.
The procedure below applies to Windows 10 and Windows 11. The exact malware family, installer and Windows build determine the final remedy, so preserve the detection name and file path rather than guessing or restoring a quarantined file.
1. Contain the suspected infection before removing anything
Do not launch the downloaded game, run its installer again, or open an included crack, patch, trainer or key generator. If the game is already running, close it without approving prompts that ask to disable protection or add an exclusion. Do not continue banking, shopping, email or other sensitive logins on the possibly infected computer. The Federal Trade Commission advises immediately stopping sensitive account logins while malware remediation begins.
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Open Windows Security and write down the detection name exactly as shown, the affected file path, the download source and the approximate time. A screenshot is useful, but do not click an option that restores, allows or excludes the file merely to make the game start. This information helps a technician distinguish a game executable, installer, archive or companion program from a false lead.
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Disconnect only when it helps containment
If the computer is actively showing suspicious network activity, you can disconnect Wi-Fi or unplug Ethernet while you begin cleanup. Do not use disconnection as a substitute for scanning, and reconnect when Windows Security needs current security intelligence or when a trusted professional instructs you to do so.
2. Understand what a detection does—and does not—prove
A Windows Security alert identifies a file or behavior that Defender considers malicious or potentially unwanted; it does not tell you that only the named game file is affected. A game installer can place additional files, scheduled components or browser changes before detection. Conversely, a potentially unwanted application (PUA) is not necessarily the same as a Trojan. Read the detection category and path, and follow the action Windows Security offers rather than relying on the game’s name.
Unexpected pop-ups, new browser settings, disabled security controls, unexplained accounts, crashes or unusual resource use can support the suspicion that something more than an unwanted game remains. None of those signs identifies a malware family by itself. Treat them as reasons to complete a full scan and escalate if they persist.
3. Uninstall the game and unrecognized companions through Windows
Microsoft recommends removing unwanted software through the standard Apps controls. This is safer than running an untrusted “uninstaller” supplied by the download.
Windows 11
- Open Settings.
- Select Apps, then Installed apps.
- Find the game, its installer entry, launcher, mod manager or companion program you do not recognize.
- Select the three-dot menu beside the entry and choose Uninstall.
- Complete the normal uninstall wizard. Do not approve requests to disable Windows Security or add exclusions.
Windows 10
- Open Settings.
- Choose Apps, then Apps & features.
- Select the game or unfamiliar companion program and choose Uninstall.
- Finish the standard uninstall process and restart if Windows requests it.
Microsoft’s unwanted-software criteria include a clear, straightforward uninstall path. If an entry has no normal uninstall option, has a misspelled publisher, or appeared at the same time as the download, record its name and path and seek professional help instead of executing a separate removal utility from the same source.
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When the game does not appear in Apps
Some portable games and incomplete installers do not register an app. Do not search for a replacement uninstaller on an unfamiliar website. Record the folder and files identified by Windows Security, leave them untouched until Defender has acted, and continue with the protection and scanning steps below. A trusted technician can determine whether a missing entry is merely a portable program or evidence of persistence.
4. Handle the installer, archive and quarantine correctly
After the standard uninstall, check the original download location for the installer or archive. Delete the remaining copy only when Windows Security or the installer’s normal uninstall process identifies it as the unwanted item and you no longer need it as evidence. If the file is quarantined, do not restore it, submit it to an exclusion list, or open it to “check” whether it still works.
Once the detection is quarantined or otherwise no longer needed for identification, emptying the Recycle Bin is reasonable. If you are working with a technician, preserve the detection name, path and time before deleting anything and follow that person’s evidence instructions.
5. Update Windows Security and run a Full scan
Microsoft recommends current security intelligence before scanning. The update allows Defender to recognize newer threats and ensures that the scan is not relying on an obsolete signature set.
- Open Windows Security from the Start menu.
- Select Virus & threat protection.
- Install any available security-intelligence update shown on the page. If Windows Update is pending, allow it to complete and restart when requested.
- Under Current threats, select Scan options.
- Choose Full scan, then select Scan now.
- Let the scan finish. Do not launch the game, browse to the download source or approve exclusions while it runs.
- Allow Windows Security to quarantine or remove each detection, then restart if Windows requests it.
Microsoft defines Full scan as scanning every file and program on the device. It is therefore the appropriate second step after uninstalling a suspicious game: it checks locations that the game’s own uninstall routine may not remove.
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Review the result in Protection history
After remediation, open Windows Security > Virus & threat protection > Protection history. Check whether the action says removed or quarantined, whether additional files were found, and whether an item is awaiting your decision. A PUA can remain present until you select an action in Windows Security; leaving a pending PUA decision does not complete cleanup.
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Choose an offline scan when the same detection returns, the game installed something that starts before Windows, or Windows Security cannot clean the item. Microsoft Defender Offline restarts the PC and scans in the Windows Recovery Environment, where persistent malware has less opportunity to hide. Results appear in Protection history after Windows starts again.
- Save open work and close applications.
- Open Windows Security > Virus & threat protection > Scan options.
- Select Microsoft Defender Antivirus (offline scan).
- Choose Scan now and confirm the restart.
- Let the computer restart and complete the Recovery Environment scan without interrupting power.
- After Windows loads, review Protection history and follow the offered quarantine or removal action.
Offline scanning has a different execution state and recovery impact from an ordinary Full scan: the computer restarts and the scan runs outside the normal Windows desktop. Plan for that interruption, save work first and do not force a shutdown during the scan.
7. What to do if Windows Defender finds a Trojan
Keep the detection name, file path and action. Select the recommended quarantine or remove action in Windows Security, not Allow on device. Then complete the Full scan; if the Trojan returns or cannot be removed, run Defender Offline. The word “Trojan” describes a malicious detection category, not a single universal cleanup command, so the exact name matters.
Do not whitelist the game to test it
Adding an exclusion, restoring the file or disabling real-time protection can turn a contained detection into an executed infection. If you believe the detection is a false positive, preserve the file’s identity and ask the publisher or a trusted professional to validate it without running the copy on your everyday PC.
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8. Protect accounts that may have been exposed
If you entered a password, payment detail or other sensitive information after running the download, use a different, known-clean device to secure the accounts. The FTC recommends changing passwords and enabling two-factor authentication when malware may have given an attacker access.
- On the clean device, change the password for the affected account first.
- Change every other account that reused that password, giving each account a unique password.
- Enable two-factor authentication wherever it is offered.
- Review recent sign-ins, recovery addresses, forwarding rules, saved payment methods and unfamiliar purchases.
- Contact your bank or card issuer through its official contact method if payment details were entered or transactions look suspicious.
Do not perform these password changes from the suspected PC until it has been scanned and you have confidence that it is clean. If you cannot tell which accounts were used after the download ran, treat all accounts accessed during that period as potentially exposed.
9. Decide whether the computer is clean enough to use
A clean result is stronger when the game has been uninstalled, the installer is quarantined or removed, security intelligence is current, a Full scan completes without unresolved detections, and Protection history shows no pending action. If a recurring detection disappears after Defender Offline and the system behaves normally, continue monitoring Protection history rather than reinstalling the same download.
Escalate when any of these conditions remains
- Windows Security cannot quarantine or remove the item.
- The same detection returns after restart or after an offline scan.
- The computer remains unstable, unexpectedly changes settings or cannot update protection.
- You cannot interpret the detection name or determine which files belong to the installer.
- Accounts or payment information may have been exposed and you need help assessing the incident.
The FTC advises contacting the device manufacturer or a trusted professional when scans fail or the computer remains unstable. A Windows reset or complete reinstall should be considered only with a current backup and appropriate professional guidance. Do not restore a backup that contains the malicious installer, and do not copy unknown executables to the replacement installation.
10. Compare the available cleanup choices
| Choice | Coverage | Execution state | Recovery impact | Use it when |
|---|---|---|---|---|
| Standard uninstall | Removes the registered game and its normal application components | Windows running | Usually none; restart if requested | Always begin here for a registered game or companion program |
| Delete or quarantine the installer | Removes the identified download copy, not other files already installed | Windows running | Usually none; preserve evidence first | Windows Security or the normal uninstaller identifies the remaining file |
| Full scan | Every file and program on the device, according to Microsoft | Windows running | Can take the computer out of use while scanning | After uninstalling any suspicious game |
| Microsoft Defender Offline | Scans from the Windows Recovery Environment, limiting malware’s ability to hide | After a restart, outside the normal desktop | Mandatory restart and interruption of work | Recurring detections, persistence or failed normal cleanup |
| Professional or manufacturer assistance | Detection-specific diagnosis and recovery planning | Depends on the support process | May require downtime, backup or reinstall decisions | Scans fail, instability persists or the detection is unclear |
11. Troubleshoot common cleanup problems
The uninstall wizard asks to disable antivirus protection
Cancel that request. A legitimate uninstall should not require you to weaken Windows Security merely to remove the program. Record the program name and ask a trusted professional to identify the files.
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The detection is still listed after removal
Open Protection history and check the action and path. A pending PUA requires you to select an action. A quarantined file should not be restored. Run the Full scan again after the action, and use Defender Offline if the same detection returns.
The scan cannot update security intelligence
Do not download a “fix” from the game’s source. Restart Windows, install pending Windows updates through the normal Settings interface and try Windows Security again. If updates remain blocked or the PC is unstable, disconnect sensitive account activity and contact the manufacturer or a trusted professional.
The computer restarts but symptoms continue
Review Protection history for a new path or detection name, then run Microsoft Defender Offline if you have not already done so. Persistent symptoms after that scan warrant professional diagnosis rather than repeated reinstalls of the game.
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12. Prevent another malicious game download
Choose a trustworthy source
Download games from the publisher’s official site or a major trusted store. Avoid unfamiliar free-download pages, peer-to-peer sources, cracks and modified installers. A familiar game title does not make an unofficial installer safe.
Keep the protection layers current
- Install Windows updates and browser updates promptly.
- Keep Windows Security security intelligence current.
- Leave SmartScreen enabled; it helps block malicious sites, applications and downloads.
- Keep potentially unwanted app blocking enabled for both apps and downloads in Windows Security.
- Review unexpected installer prompts instead of approving exclusions or administrative changes automatically.
Potentially unwanted app blocking is a prevention layer, not a guarantee that every file is harmless. Windows Security may identify a PUA and wait for you to select an action, so check Protection history after a blocked download.
Quick Recap
13. A concise recovery checklist
- Stop launching the game or installer.
- Stop sensitive logins on the suspected PC.
- Record the detection name, path, source and time.
- Uninstall the game and unrecognized companions through Windows Settings.
- Quarantine or delete the identified installer only after preserving needed evidence.
- Update security intelligence.
- Run Virus & threat protection > Scan options > Full scan.
- Review Protection history and complete pending actions.
- Run Microsoft Defender Offline if the detection recurs or normal cleanup fails.
- From a clean device, change potentially exposed passwords and enable two-factor authentication.
- Escalate to the manufacturer or a trusted professional if instability or detections persist.
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