Application has been blocked to accessing graphics hardware

Matthew Adams
by Matthew Adams
Windows & Software Expert
Matthew is a freelancer who has produced a variety of articles on various topics related to technology. His main focus is the Windows OS and all the things surrounding it. He is passionate about... Read more
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  • The Application has been blocked from accessing graphics hardware is an error message that can appear at the bottom right of the Windows 10 desktop. The error message appears when some users try to play Windows or browser games.
  • The error can be due to corrupted graphics card system files, so the System File Checker, which scans for and repairs corrupted system files, can potentially resolve the issue.
  • System errors are usually pretty serious so don't delay the intervention. Read our article from the  System errors section for possible solutions.
  •  If an error is nagging you, go to our Windows 10 errors Hub for a quick solution.
How to fix Application has been blocked from accessing graphics hardware
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What to do if apps have been blocked from accessing GPU

  1. Run a System File Checker Scan
  2. Roll Windows 10 Back to a System Restore Point
  3. Reinstall the Graphics Card Driver
  4. Update the Graphics Card Driver
  5. Edit the Registry

The Application has been blocked from accessing graphics hardware is an error message that can appear at the bottom right of the Windows 10 desktop.

The error message appears when some users try to play Windows or browser games.

It is a graphics issue that stops games running. These are some of the resolutions that might fix the Application has been blocked issue in Windows 10.

How can I fix Application has been blocked errors?

1. Run a System File Checker Scan

The Application has been blocked error can be due to corrupted graphics card system files. So the System File Checker, which scans for and repairs corrupted system files, can potentially resolve the issue.

This is how users can run an SFC scan within Windows 10.

  1. Open the Win + X menu with the Windows key + X keyboard shortcut.
  2. Click Command Prompt (Admin) to open the Prompt’s window.
  3. Input ‘DISM.exe /Online /Cleanup-image /Restorehealth’ within the Command Prompt, and press the Enter key.
    No Task Manager Windows 10
  4. Thereafter, enter sfc /scannow and press Return to initiate an SFC scan that might last for about 20-30 minutes.
  5. Restart Windows if the system file scan fixes files.

2. Roll Windows 10 Back to a System Restore Point

System Restore can fix numerous issues as it undoes system changes after a selected restore point.

So that utility might also fix Application has been blocked error if users can select a restore point that will roll Windows 10 back to a time when the error message did not pop up on the Windows 10 desktop.

This is how users can roll back to the previous version of Windows 10.

  1. Open Run with its Windows key + R keyboard shortcut.
  2. Enter ‘rstrui’ in Run, and click the OK button.
  3. Click the Next button on the System Restore window that opens.
  4. The System Restore window might include a Show more restore option. Select that option if you can expand the restore point list.
  5. Choose a restore point to roll Windows 10 back to.
  6. Click the Next and Finish buttons.

Note that users can’t roll Windows 10 back to previous build versions with System Restore. However, the Settings app will temporarily include an option to restore the previous version.

Then users can still restore a previous Windows 10 version for about 10 days after a build update.

To do that, click the Type here to search button on the taskbar. Then enter update in the search box, and select Recovery options to open Settings.

Press the Get started button under the Go back to previous Windows 10 version subheading.

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  4. Press Start Repair.
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3. Reinstall the Graphics Card Driver

The Application has been blocked error often arises as a consequence of an incompatible or corrupted graphics card driver. Some users have stated that the error message pops up after a Windows 10 build update.

So the graphics card driver might be misconfigured after an update Thus, reinstalling the video card driver might resolve the issue. Users can reinstall the graphics card driver as follows.

  1. Press the Windows key + X keyboard shortcut, and select Device Manager on the Win + X menu.
  2. Double-click Display adapters to expand that category.
    Device Manager
  3. Right-click the graphics card and select the Uninstall device.
  4. Select the Delete the driver software for this device option on the dialog box window that opens.
  5. Then click the Uninstall button.
  6. Press the Scan for hardware changes button to reinstall the driver.

4. Update the Graphics Card Driver

Alternatively, try updating the graphics card driver with a third-party driver updater that will scan and list outdated, faulty, or missing device drivers.

The software will also perform periodic maintanance to make sure your hardware has the latest firmware available at all times.

Additionally, its driver list gets constant updates as newer drivers are being released to the public. You will surely find compatible ones for any hardware you own.

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5. Edit the Registry

Increasing the TDR (Timeout Detection and Recovery) time is another potential resolution for the Application has been blocked error. Users can raise the TDR time to about eight seconds.

To do that, edit the registry as follows.

  1. Enter regedit in Cortana’s search box.
  2. Right-click regedit and select Run as administrator.
  3. Then browse to the ComputerHKEY_LOCAL_MACHINESYSTEMControlSet001ControlGraphicsDrivers or ComputerHKEY_LOCAL_MACHINESYSTEMControlSet002ControlGraphicsDrivers registry key path.
  4. Select the GraphicsDrivers key on the left of the window.
    Registry Editor
  5. Right-click an empty space on the right of the window and select QWORD (64-bit) Value. Alternatively, select DWORD (32-bit) Value if you have a 32-bit Windows platform.
  6. Type TdrDelay as the QWORD or DWORD title.
  7. Double-click TdrDelay to open the window shown directly below.
  8. Then enter 8 in the Value data text box, and click the OK button.
  9. Restart the laptop or desktop.

Those resolutions might kick-start games that the Application has been blocked error message pops up for. If anybody has another resolution that fixes the same issue, feel free to share it below.

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Frequently Asked Questions

  • Graphics hardware is computer hardware that generates computer graphics and allows them to be shown on a display, usually using a graphics card (video card) in combination with a device driver to create the images on the screen.

  • The first thing you should do is to run a System File Checker scan. If that doesn’t solve the problem, follow our step-by-step guide in solving this issue.

  • Stand-alone graphics cards have their own memory to use but an integrated graphics processing unit (GPU) uses the system’s memory instead. Therefore, the video card will use a portion of the available memory for graphics processing.

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