Some enterprise websites (for example, IIS, SAP etc.) require the user to log in with a certificate. Usually, on such sites, a pop-up dialog box asks the user to select a certificate to authenticate themselves (see an example below),
However, in some cases, instead of showing the certificate selection dialog box, the user may see a '404: Page Not Found' error.
The solution is to disable monitoring of the site/domain/IP from the Monitoring Settings screen:
- Click the Gear icon near the top right corner of the dashboard and select Monitoring Settings from the pop-up menu.
- Click a monitoring profile you want to change or click the Default settings profile to change the monitoring settings for all users.
- Click the small Gear icon near the right side of the Websites row.
- Enter the website address/domain/IP in the DON'T MONITOR WEB TRAFFIC FOR THESE IPS field and click the APPLY CHANGES button: