AhnLab Online Security - FAQ

Symptoms

Error Description: "Installation failed due to an error. Click Yes to resolve this problem."

Cause

Updating has been stopped because you aren't authorized to write to this folder. The folder permission could have been arbitrarily changed by a user, or by viruses or spyware.

Solution

1
Windows Vista/7

In the Windows Explorer menu, navigate to Organize --> Folder and search options --> View and uncheck the "Use Sharing Wizard" option.

Select My Computer --> C drive and right-click the Program Files folder to select Properties.

Select Security and click Advanced.

Select Owner and click Edit.

Select Administrators and click Apply.

Move back to Permissions, select Administrators and click Edit.

Select Administrators, click Edit and check "Allow" for all the permissions.

Click OK to finish, and log into the site again.

2
Windows XP Home

Boot the system in Safe mode. (At bootup, press F8 a few times to display the screen below. Select Safe Mode and choose your operating system from the boot menu. It make take a while for the system to boot up.)

Select My Computer --> C drive --> Windows/WinNT and right-click the Program Files folder to select Properties.

Select Security and check "Allow" for the permissions for both Everyone and Administrator. (Deselect the check boxes to choose "Deny.")

Click OK to finish, and log into the site again.

3
Windows XP Professional

In the Windows Explorer menu, navigate to Tools --> Folder Options --> View and uncheck the "Use Simple File Sharing" option.

Select My Computer --> C drive and right-click the Program Files folder to select Properties.

Select Security and check "Allow" for the permissions for both Everyone and Administrator. (Deselect the check boxes to choose "Deny.")

Click OK to finish, and log into the site again.

4
Windows 2000

Select My Computer --> C drive and right-click the Program Files folder to select Properties.

Select Security and check "Allow" for the permissions for all users currently logged in.