Logon with URL parameter not possible; logon cookie is missing

Symptom

You are getting below error while login into the SAP via web browser,

Solution

You need to enable the cookie in the Internet Explorer (Below example is executed in Internet Explorer 11)

1. Open the Internet Options and jump to Privacy tab. From below screenshot, you can adjust the scroll to control the restrictions. The Medium setting is already sufficient to allow the any SAP web page accessible.

2. Alternatively, you can click on the Sites and enter the desired website. Click on Allow.

Reference

SAP Note 1617090 – ICF system logon: Logon fails, logon cookie