Fix USB not Installing Issue: Access is denied
First, make sure that you login to computer as Administrator. If you are not logged in with Administrator, follow steps below to switch it to Administrator.
1. Go to Control Panel and View by Category. Click User Accounts.( In your case, this may be “User Accounts and Family Safety”.)
2. Click Change your account type and enter your password if necessary.
3. Then click Start button and choose to Log off of Windows, and then log back in again.
After that, reinstall the driver again.
Turn off any antivirus or anti-spyware program
If you are using an Administrator account and the problem persists, turn off any antivirus and anti-spyware program temporarily. This will work if the update is blocked by these program.
Give permission to USBSTOR registry key
If the problem could not be resolved, the USBSTOR registry key most probably has denied access to SYSTEM account. Follow these steps and give permission to USBSTOR registry key.
1. Press Win+R (Windows key and R key) at the same time. A Run dialog will open.
2. Type regedit in the run box and click OK button.
3. Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR. Right-click on it and select Permissions… from the context menu.
4. Select SYSTEM from the Group or user names. In Permissions for SYSTEM section, make sure the Full Control Allow checkbox is checked and uncheck any Deny checkbox. Click Apply button to apply the changes.
Also check your user account and see if it has full control of the system and any deny checkbox is unchecked.
After that, update the USB driver again and it should work this time.
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