PC App Store Virus Removal: Stuck Pop-Up and Uninstall Fix

PC App Store is a third-party Windows marketplace from Fast Corporation—not the Microsoft Store. Security products classify some PCAppStore components or builds as adware or potentially unwanted programs (PUPs), while the developer disputes those detections; the filename alone does not prove that a file is malicious. If PC App Store is stuck on screen or you did not install it intentionally, close its process, uninstall the app in Windows, restart, and scan for bundled leftovers. If you entered payment details, cancel billing separately: uninstalling the Windows app does not stop subscriptions.

Is PC App Store a virus, adware, or a PUA?

“PC App Store virus” is the phrase many people search after an unexpected install, a persistent pop-up, or a security alert. A more precise answer is that PC App Store is a third-party marketplace, and some specific files associated with it have been classified as adware or PUPs. Microsoft publishes the exact detection name Adware:Win32/PCAppStore!MSR. The operator’s FAQ says antivirus warnings are false positives.

Those statements can coexist because security verdicts apply to a particular file, version, behavior, or detection engine—not every file that shares the name PCAppStore.exe. Gridinsoft’s sample-level records include signed files detected as PUP.PCAppStore and PUP.VeryFast, while other signed builds have required further analysis. A digital signature or familiar filename helps identify the publisher, but it is not a safety verdict by itself.

Treat the installation as unwanted and remove it if you did not choose it, if it arrived with another installer, if it changes search or browser behavior, if it keeps returning, or if a security product identifies a specific component. If you installed it deliberately and see no unwanted behavior or detection, you can still uninstall it normally if you no longer use it.

How to close PC App Store when it is stuck on screen

Do not click an account, payment, update, or “Allow” prompt just to clear the window. First close the running process:

1. Press Alt + F4. If the window closes, continue to the uninstall section.
2. If it stays on top, press Ctrl + Alt + Delete and select Task Manager. This Windows security screen is harder for an ordinary app window to block.
3. In Processes or Details, look for PCAppStore.exe or an entry clearly named PC App Store. If you are unsure, right-click it and choose Open file location or Properties; note the path and publisher for the later scan.
4. Select only the verified PC App Store process and choose End task. Do not end a random Windows, browser, or updater process merely because its name looks unfamiliar.
5. Disconnect from the internet temporarily if the window immediately reloads, then restart Windows and begin removal.

If Ctrl + Alt + Delete does not appear, hold the physical power button only as a last resort. An interrupted shutdown can lose unsaved work, so try the Windows security screen first.

Remove PC App Store from Windows 11 or Windows 10

Windows 11

1. Open Start > Settings > Apps > Installed apps.
2. Search for PC App Store.
3. Select the three-dot menu beside it, choose Uninstall, and confirm.
4. Restart Windows even if the uninstaller does not request it.

Windows 10

1. Open Start > Settings > Apps > Apps & features.
2. Select PC App Store, choose Uninstall, and follow the prompts.
3. Restart Windows.

On either version, you can press Windows + R, enter appwiz.cpl, and look for PC App Store in Programs and Features. This is useful when the newer Settings list does not load.

What to do if PC App Store will not uninstall

1. Restart and retry. A running PCAppStore process or updater can lock files during the first attempt.
2. Check the actual running file. In Task Manager, use Open file location and Properties. Save the full path and the Digital Signatures information. This gives your scanner something specific to evaluate.
3. Disable only the matching startup item. Open Task Manager > Startup apps. Disable an entry only when its path and publisher match the PC App Store installation you just inspected. Our startup-app verification guide explains how to assess an unfamiliar entry.
4. Try Safe Mode if it relaunches before you can remove it. Open Windows Recovery Environment, then choose Troubleshoot > Advanced options > Startup Settings > Restart > Enable Safe Mode. If device encryption is enabled, have the BitLocker recovery key available before entering recovery options.
5. Run a full malware scan. If no uninstaller exists, the entry returns, or the visible app is only one part of a bundle, a scanner can check the file, startup points, scheduled tasks, and co-installed PUPs together.

Do not delete folders named NWJS, fa_rss, or anything in ProgramData merely because of the name or creation date. NW.js is a legitimate framework used by many apps, and a timestamp does not prove ownership. Delete a leftover only after its path, signature, parent process, and scan result tie it to the unwanted installation.

Uninstalling PC App Store does not cancel billing

Windows removal and account billing are two independent jobs. The operator’s FAQ explicitly says that removing the application does not cancel subscriptions or payments.

1. Open a clean browser and type pcappstore.com yourself instead of following a link in a pop-up.
2. Sign in to the account you used for the purchase and review transaction history, subscriptions, invoices, and the saved payment method.
3. Cancel any renewal you do not want and save the confirmation page or email.
4. If the account does not expose a cancellation control, contact the operator through the support options on its official FAQ page and keep a copy of the request.
5. If you do not recognize a charge, contact your card issuer promptly. Ask about blocking future charges and disputing the transaction; do not send card details through a pop-up or unsolicited support message.

Scan for bundled components and persistence

A normal uninstall removes the registered application, but it may not explain how the software arrived or whether another bundled program remains. This is where Gridinsoft Anti-Malware makes the cleanup easier: one Full Scan can inspect the app files alongside startup entries, scheduled tasks, browser-related changes, and other PUPs instead of making you guess which similarly named folder is safe to delete.

1. Reconnect to the internet, update Gridinsoft Anti-Malware, then choose Full Scan. Use a Full Scan after a confirmed detection, an unexpected installation, or symptoms that return after reboot.
2. Review each result’s path, risk name, and recommended action. Confirm that the path belongs to the unwanted installation rather than removing files by name alone.
3. Quarantine uncertain items so the action is reversible; remove confirmed unwanted components.
4. Restart if prompted. This allows locked files and persistence entries to be handled during boot.
5. Run a follow-up Quick Scan. The system should stay clear after another restart.

Clean the browser only if its settings changed

You do not need to reset every browser simply because PC App Store was installed. Check browser settings only if you see a new search engine, homepage, extension, notification source, or recurring redirect:

• remove extensions you did not approve;
• restore your preferred search engine and startup page;
• revoke notification permission from unfamiliar sites;
• close and reopen the browser, then verify that the change survives a restart.

If a setting returns, use the browser hijacker cleanup guide to trace extension, policy, shortcut, and notification persistence. A factory reset is a later step, not the starting point.

How to verify that removal worked

After the uninstall and scan, restart once more and check all of the following:

• no PC App Store window or notification appears at sign-in;
• PC App Store is absent from Installed apps and Startup apps;
• Task Manager does not show the same verified PCAppStore.exe path;
• your browser keeps its chosen search, homepage, and notification settings;
• a follow-up scan finds no returning PC App Store component or bundled PUP;
• the account shows the expected subscription status and no unexplained new transaction.

If the same item returns, do not repeat random folder deletion. Record the detection name and path, note what launches immediately before it appears, and scan again. A recurring result usually points to a startup task, updater, installer cache, browser policy, or another bundled program that the first symptom did not identify.

Do you need to change passwords or reset Windows?

Change the PC App Store account password if you entered credentials into an unexpected prompt, and change any reused password on other services. Contact the card issuer for unrecognized billing. A full Windows reset is rarely the first response to a PUP: consider it only when verified malicious activity persists after quarantine, reboot, follow-up scans, and expert review, or when Windows itself remains damaged.

Related unwanted-app guides

• Remove EStart/E Start and its browser changes
• Remove ProW File Compressor and check bundled PUPs

FAQ

References

1. Microsoft Security Intelligence. “Adware:Win32/PCAppStore!MSR.” Published November 2, 2022. Accessed August 14, 2026.
2. Microsoft Support. “Windows startup settings.” Accessed August 14, 2026.
3. PC App Store, Fast Corporation. “Frequently Asked Questions.” Accessed August 14, 2026.