Need to change permissions in the OS in order to log into CampaignMax. Do the following:
1.Click on Start, Programs, Administrative Tools, IIS.
Click on the server name.
Click on Web Service Extensions
Click on Active Server Pages
Change status to 'Allowed'
2. At the Server name level, Click on Web Sites.
Click on Default Web Sites.
Click on Campaign.
Right Click on Properties.
Click on Directory.
Click on Configuration Button Options
Enable parent paths.
Click okay.
Close all windows and retry to log onto CampaignMax.