Open Command Prompt CMD (if necessary run as admin) and run below commands: App icacls "C:\Siebel\8.1.1.11.0\ses" /grant EveryOne:F /T /C Web icacls "C:\Siebel\8.1.1.11.0\eappweb" /grant EveryOne:F /T /C Gateway icacls "G:\Siebel\8.1.1.11.0\ses" /grant EveryOne:F /T /C From Microsoft Docs: icacls Displays or modifies discretionary access control lists (DACLs) on specified files, and applies stored DACLs to files in specified directories. To save the DACLs for all files in the C:\Windows directory and its sub directories to the ACLFile file, type: icacls c:\windows\* /save aclfile /t To restore the DACLs for every file within ACLFile that exists in the C:\Windows directory and its subdirectories, type: icacls c:\windows\ /restore aclfile To grant the user User1 Delete and Write DAC permissions to a file named "Test1", type: icacls test1 /grant User1:(d,wdac) To grant the user defined by SID S-1-1-0 Delete and Write DA...