If you have installed Security Root Keylogger on a NTFS driver and want to monitor all users' activities, you need to configure the Logs Folder have a Everyone permissions.

Follow below steps:
1) 
Open the logs folder's property dialog:


2) 
then click the Security tab as shown in below


3) 
To set permissions for a group or user that does not appear in the Group or user names box, click Add. Type the name of the group or user you want to set permissions for and then click OK, as shown in below. 

*You need to enter 'EveryOne', then click OK.
*If you can not see the security tab, please visit: How do I get the security tab in folder properties?