Overview
This article provides details and specifics for how to set up a Password-Free SSH key to connect to ARCC HPC Clusters from a Windows client. Each key is associated with your identity, therefore you do not need to create a new key for every client you use to ssh into the HPC.
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| title | Correcting SSH Key Permissions Issues using Windows GUI |
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The following instructions provide correction using Windows GUI interface. Disable permission inheritance for the .ssh folder Go up to the folder containing your key and certificate files. (Usually this is C:\Users\<your_username_on_the_computer>\) Right click on the .ssh folder (or whichever folder contains your new key files).  Choose Properties from the list of options in the menu (you may also select the .ssh folder so it is highlighted and hit Alt+Enter) This will bring up a Properties window for your folder.  Click on the Security tab in the window then click the Advanced button.  This will bring up a new window for the folders Advanced Security Settings. Ensure that the Permissions tab is selected, then click the button to disable inheritance. 
Convert your directory/folder permissions to explicit permissions. You will be prompted for how to handle the blocked inheritance. Choose the option to Convert inherited permissions into explicit permissions on the object.
Warning: Choosing the other option (to remove all inherited permissions from this object) can make the entire folder inaccessible. Do not select that option. If accidently selected, click the Cancel button at the bottom. After converting the inherited permissions to explicit permissions set them to remove all users except for SYSTEM and yourself. Ensure that both you and SYSTEM have Full Control under access:  After confirming permissions for the folder are set correctly, Click the Apply button. Permissions should now be correctly set.
Update permissions for the key files: Within the folder in which your key files are stored, perform the same actions to update permissions on each of the following files: id_ecdsa, id_ecsda.pub id_ecdsa-cert should all have the following permission properties:
SYSTEM and your_username on the computer should have full control while no one else has access to them. 
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