How to pass parameter from RP to IDP in passive flow?

Anand AV 96

We have multiple client's IDP federated with our ADFS 4.0 server.
A user click login from web application (RelyingParty ) then redirected to ADFS's IDP selection page and redirected to there respective IDP page.

Now my question is how to pass RelyingParty identifier("https://webapp.mycompany.net") to IDP.
I see wtrealm has the RPI but when ADFS redirects the request to IDP it changes the value to it's own identifier(http://sts.mycompany.net/adfs/services/trust)

Can some one please help me on this?.

Thanks.

Accepted answer

Anand AV 96 Reputation points

2021-02-17T06:06:35.233+00:00
The following command pass "wctx" from RP->ADFS->IDP

Set-AdfsWebConfig -ContextCookieEnabled 0

Source: https://nzpcmad.blogspot.com/2014/09/adfs-joys-of-hiden-context.html
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1 additional answer

Pierre Audonnet - MSFT 10,181 Reputation points Microsoft Employee

2021-02-14T22:34:16.473+00:00
When using the IDP Initiated Flow for your application, you can use the LoginToRp query string to skip the drop down menu selection. For example:

https://sts.contoso.com/adfs/ls/IdpInitiatedSignon.aspx?LoginToRP=https://webapp.mycompany.net
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Anand AV 96 Reputation points

2021-02-15T15:22:56.087+00:00

I want to pass a value (e.g. language/countrycode/company/relyingpartyidenfier ) in query string from RP->ADFS->IDP(Authenticate).

Pierre Audonnet - MSFT 10,181 Reputation points Microsoft Employee

2021-02-15T16:54:05.153+00:00

Oh, I see. I misread the question. I thought you were using the IDP initiated flow under the cover. In an SP-initiated flow, you need to pass a RelayState information in your request.
RelayState will be passed back as-is to the SP once the authentication is sucessful.

Aaron Christenson 41 Reputation points

2021-07-09T17:15:41.097+00:00

Piaudonn,

I am interested in this also, do you know how to send parameters in the relaystate request string. I have this https://adfsuat.lmcu.org/adfs/ls/idpinitiatedsignon.aspx?logintorp=urn:bki:servicingdigital:rwa:lmcu:uat and I also need to pass through
NameId=3423423
LoanIdentifier=3423423
TaxpayerIdentifierLast4Value=4893
PortfolioId=258

Thanks
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How to pass parameter from RP to IDP in passive flow?

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