To resolve the issue, please do the following:

1. Open the Internet Information Services (IIS) 6.0 Manager.
2. Go to the OfficeScan Remote Install virtual directory by double-clicking Web Sites > OfficeScan > Officescan > console > remoteinstallcgi.
3. Right-click the cgiRemoteInstall.exe file and click Properties.
   
   
    
4. Go to the File Security tab and then click Edit under the Authentication and access control section.
   
   
    
5. Select the Enable anonymous access option, then specify the Local Administrator account and password.
   
   
    
6. Click OK > OK.
7. Restart the following services:
   • Trend Micro Security Server Master Service
   • World Wide Web Publishing Service

If the procedure fails, refer to these solution articles:

• The error message "Invalid login" appears when installing the Client / Server Security Agent via Remote Install
• Important guidelines if you cannot perform a remote installation on Windows Vista and Windows 7

If you need techincal assistance, please contact Trend Micro Technical Support.