Friday, September 14, 2012

Random Characters Folder Deletion (Windows 7)

After a windows update it not un-usual to see a folder with random characters. This folder cannot be deleted with regular deletion. For example, there is this folder with random characters after an update.

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I try to delete the folder and get the message.

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How to go about deleting the folder. The process is to change the permission and try the deletion.

1. Right click the folder, Select Properties.

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2. Select Advanced, Owner Tab, Edit, and change the owner to Administrator. Check the check box to ensure everything inside the folder changes as well. Confirm with OK button.

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3. Goto Command Line (cmd.exe and run as administrator) and get the ACLs on the folder

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Brief explanation what the command is doing.

a. cacls is for changing permissions (access control lists). In Windows 7 it is replaced with icacls.

b. This command has been since Windows NT days and is a convenient way to modify ACL’s of a large number of folders. (Alternative would be to go via Windows Explorer)

c. /t is for replacing the permissions.

d. /g is to grant permission, with :F meaning full control.

e. /f will give a “Yes” by default. else you need to answer the question “Are you sure (y/n)”

 

So there you are. You can now go and delete the folder.