ERROR_ACCESS_DISABLED_NO_SAFER_UI_BY_POLICY [BSOD Fix]

The ERROR_ACCESS_DISABLED_NO_SAFER_UI_BY_POLICY with error code 786 (0x312) and description Access to %1 has been restricted by your Administrator by policy rule %2, appears in Windows where Group Policy settings or other administrative controls limiting access to certain apps or system functionalities.

How can I fix the ERROR_ACCESS_DISABLED_NO_SAFER_UI_BY_POLICY?

1. Check the group policy settings

1. Press Windows + R to open the Run console.
2. Type gpedit.msc and click OK to launch the Group Policy Editor app.
3. Navigate to this path: User Configuration > Administrative Templates > System
4. Next, look for Don’t run specified Windows applications or Run only specified Windows applications.
5. Once located, double-click it and open the Properties window.
6. Select Not Configured.
7. Click Apply and OK to save the changes.

2. Change the Local Security Policy

1. Press Windows + R to open the Run console.
2. Type secpol.msc and click OK to open the Local Security Policy window.
3. Navigate to this path: Advanced Audit Policy Configuration>System Audit Policies-Local Group Policy Object
4. Locate and double-click Logon/Logoff.
5. Look for any security policies restricting access to apps or systems, then double-click it.
6. You can reset the settings to make changes to the policies.
7. Click Apply and OK to save the changes.

3. Modify the Virus & threat protection settings

1. Press the Windows key, type security in the search box, select Windows Security, and click Open from the list of options.
2. Click Virus & threat protection.
3. Select Protection history, and on the following page, you will see recently detected threats, including blocked apps. You can click the app name and select Allow to run the app.
4. Alternatively, go back to Virus & threat protection.
5. Under Virus & threat protection settings, select Manage settings.
6. On the next screen, under Exclusions, click Add or remove exclusions.
7. Click OK on the UAC prompt.
8. Click the Add an exclusion button, then choose File.
9. Now, navigate to the app folder in the system drive, select it, and click Open.

4. Edit the App & Browser Control settings

1. Press the Windows key, type security in the search box, select Windows Security, and click Open from the list of options.
2. Click App or browser control.
3. Under Reputation-based protection, select Reputation-based protection settings.
4. Locate Check apps and files settings and toggle off switch next to On.
5. Click OK on the UAC prompt to confirm the changes.

5. Edit the Registry entries settings

1. Press Windows + R to open the Run dialog box.
2. Type regedit and click OK to open the Registry Editor app.
3. Click Yes on the UAC prompt.
4. First, go to File>Export. Save the .reg file at the desired location.
5. Navigate to this path: Computer\HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System
6. Look for DisableTaskMgr, DisallowRun, or NoControlPanel; if found, double-click it and change the Value data.
7. Click OK to save the changes, then restart your computer to save the changes.

6. Perform a System Restore

1. Press the Windows key, type control panel in the search box, select Control Panel, and click Open from the list of options.
2. Click View by, then select Large icons, then click Recovery.
3. Click Open System Restore.
4. On the System Restore wizard, select Choose from a different restore point and click Next.
5. Select the oldest restore point or the one created before the ERROR_ACCESS_DISABLED_NO_SAFER_UI_BY_POLICY, then click Next.
6. Click Finish.

Windows will restart and restore the system settings to the selected version. If it fails, and you see System Restore did not complete successfully after the restart, it could be due to conflicting drivers or corrupted system files.

In conclusion, to fix ERROR_ACCESS_DISABLED_NO_SAFER_UI_BY_POLICY, you can check the group policy settings or local security policy, add the app to an exclusion list under Virus and threat protection settings, edit registry entries, or perform a system restore.

We have also covered some other BSoD errors, like PFN_LIST_CORRUPT and Error_Corrupt_Log_Unavailable, don’t miss them.

If you have any questions or suggestions about the BSoD error, feel free to mention them in the comments section below.