A malformed protocol request was received by the AD FS Web Agent. More data than expected was received in the message. Expected ...

A malformed protocol request was received by the AD FS Web Agent. More data than expected was received in the message. 
Expected data length: %1 
Received data length: %2 

This request will be failed. 

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 it is compatible with Active Directory Federation Services (AD FS). 

If this condition persists, enable the AD FS troubleshooting log.