A malformed protocol request was received by the AD FS Web Agent. The response contained no Security Assertion Markup Language ...

A malformed protocol request was received by the AD FS Web Agent. The response contained no Security Assertion Markup Language (SAML) token. 

This request will fail. 

This situation can occur because of data corruption, data tampering, malfunctioning software, or interoperability failure. 

User Action 
If you are using non-Microsoft federation software in your environment, verify that the federation software is compatible with AD FS. 

If this condition persists, consider enabling the AD FS troubleshooting log.