I'm running Windows XP Pro Service Pack 3 with all updates from Windows Updates. I have renamed the built-in Admintrator account for security and also changed the password to a strong password. This account has always been in the Administrators user group. After doing this I created a user account named Administrator (as suggested by many security sites) and disabled this account. Both of these actions were performed shortly after the OS installation which was long before this problem started.
After researching this problem on the web, somebody had suggested to another person to verify the security setting "Accounts: Administrator account staus" was set to Enabled. I decided to double-check on my machine, and amazingly that setting was set to Disabled. I promise you I did not change that setting to Disabled!! I immediately changed the setting back to Enabled via Safe Mode. I'm guessing that my problem start when setting was somehow changed to Diabled.
However I'm still getting the "Access denied" message when trying to change permissions on SOME files even though the Adninstrators group has the Full Control permission on the file, the owner of the file is either the Adminstators group or the Adminstator(MachineName/RenamedAdminstratorName).
Also I'm getting the same error message while trying to change any String Value of the the HKLM\SOFTWARE\Microdsoft\Windows\CurrentVersion\Run key. This key has the same sort of perrmissions that the above files do. However I can add/modify other String Values in different keys with the EXACT same permissions. Obviously this can cause problems when installing software that must write an entry in the HKLM\SOFTWARE\Microdsoft\Windows\CurrentVersion\Run key.
I'm totaly confused!! I've never had this problem on other machines. Any sugestion on fixing this problem would be greatly appreciated!! Along with an additional