Set permissions for directories that contain OPC executables

If the local users are not part of the Users group, grant file-system access to OPC applications and services:

1. Right-click the OPC application’s executable folder (not the application executable itself) and then click Properties.

2. In the Properties window, click the Security tab and then click Edit.

3. In the Permissions window, click Add to add your OPC users to the list of authorized users authorized to launch and access the application.

4. Set the following permissions to Allow:

   • Read & Execute

   • List Folder Contents

   • Read

   Note: If your OPC server vendor recommends or requires other permissions, be sure to set them.