How To Fix System Error 5 “Access Is Denied”

What Causes System Error 5?

There are many reasons why you could receive this error message, the main reason being that the Windows Vista User Account Control (UAC) does not grant permission to local users. This part of your system controls all the user account information for your system, making it vital that you’re able to get it working to prevent any potential errors on your system. There are also other causes of this error:



Time synchronization problem.
Missing permission to access the remote computer.
Firewall and/or third party product may eliminate connection to the remote computer.
Active Directory replication error may occur.


How To Fix System Error 5

Step 1 – Change The “LocalAccountTokenFilterPolicy” Registry Key There is a way to work around the issue and this is by changing the value of the ‘LocalAccountTokenFilterPolicy’ registry key on your Windows Vista computer to make sure that full credentials are passed between both Windows Vista and XP. To do this follow these steps:

1. Open the Start menu and enter the regedit command in the Start Search Box.
2. In the Programs list, select regedit.exe to open the Registry Editor window. 
3. If you get prompted then give the administrator password to continue or select Continue to confirm.
4. In the registry editor window search for the following registry key:
5. HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Cur rentVersion\Policies\System
6. If the ‘LocalAccountTokenFilterPolicy’ entry is not in this registry key, then follow these steps to add it and set its value:

1. Open the Edit menu and point to New and select the DWORD VALUE command.
2. Type LocalAccountTokenFilterPolicy and then click OK.
3. Right-click on the LocalAccountTokenFilterPolicy key that you have just added and select Modify.
4. Type the number 1 in the Value Data box, click OK.
5. Exit the Registry Editor window and restart your computer.

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