Why cannot I have access to install anything or update anything when I am the only administrator on my pc

It is moronic for your customers buy and install a WPC and not have complete access to any and all files imported into the machine. This issue is what you are held in the lowest regard by you users. It is beyond stupid since we can simply go in and turn turn it all off. Except of course it take frustrating time to figure out how to do it. Ant thought to not depriving access then advise clients to 'fine tune' file security after downloading/restoring files on their machines? Or does that make too much sense. BTW migrating to a new machine is worse than a root canal JMO

Hello Austin,

Welcome to the Microsoft Community.

The problem you encounter, "Windows cannot access the specified device, path, or file. You may not have the appropriate permissions to access the item" may be caused by a variety of reasons. Even though you are the administrator, you may still encounter insufficient permissions or other related issues. Here is a detailed analysis and possible solutions:

Insufficient permissions: Although you are an administrator, some files or folders may still have specific permissions set, which prevents you from installing or updating. You can try to check and modify the permissions of these files or folders. The specific steps are as follows:

Right-click the file or folder you need to access and select "Properties".

Switch to the "Security" tab.

Make sure your username is in the list and has the required permissions (such as full control, modify, etc.).

Antivirus software blocking: Antivirus software may block access to certain files or programs. You can try to temporarily disable the antivirus software and try the operation again. If the problem is solved, you can add the relevant files to the antivirus software's whitelist.

File location or status problem: The file may have been moved, deleted, or damaged, or the shortcut may be damaged. You can check the actual location of the file to make sure it exists and has not been moved or deleted. If there is a problem with the shortcut, you can try to recreate the shortcut.

System settings: Sometimes system settings can cause permission issues. You can try running the application as an administrator, or enable the hidden administrator account and give it administrator privileges.

Windows security features: Windows security features may block certain files downloaded from the Internet or low-reputation applications from running. You can check and disable these features, or add the affected files to the Windows security exclusion list.

System file corruption: Some system files may become corrupted due to malicious infection, causing the system file check to fail. You can use the System File Checker tool (SFC) to repair these corrupted system files. Open Command Prompt as an administrator. Run the following commands one by one:
DISM /Online /Cleanup-Image /ScanHealth 
DISM /Online /Cleanup-Image /CheckHealth 
DISM /Online /Cleanup-Image /RestoreHealth 

Run sfc /scannow and wait for the process to complete. Check if there are any detected errors.

Try to create a new Windows user account by following the steps below, to see if you still have the problem under the new account.

1. On taskbar, search for CMD, then right click on "Command Prompt" to run it in administrator mode and enter the following command:

net user USERNAME PASSWORD /add

2. After the command runs successfully, enter the following command

net localgroup administrators USERNAME /add

Note: USERNAME PASSWORD can be replaced with your desired account name and password, if you do not need a password, you can skip filling in the PASSWORD.

Through the above two steps, you have successfully added a "USERNAME" account with the administrator permission. If there is no problem under the new account, it should be the account configuration file failure, please refer to the following article to transfer your data to the new account: Fix a corrupted user profile in Windows - Microsoft Support

It is recommended that you first check the permissions on the file or folder, and then check the antivirus software, file location, system settings, etc. If the problem persists, you can consider using the system restore feature to restore to a previous state.

Best Regards,

William.Y | Microsoft Community Support Specialist