Single Sigon and Forms Authentication - multiple server

[THY02K]

Hi, I'm trying to get Single Sigon/Forms Authentication to work across multiple application. It worked, but only among applications on SAME server - the trick is to remove "isolateApps" from "machineKey" in machine.config:

<machineKey validationKey="AutoGenerate,IsolateApps" decryptionKey="AutoGenerate,IsolateApps" validation="SHA1"/>

However, one of our apps need to be hosted on a different machine, Single Sign-on failed. I tried to straighten the problem by setting validation/decryption keys in BOTH servers:

<machineKey validationKey='3B29E943741F9F04ED97D11E54CFAD34050E7A790E1D2B1048904F8276A7065CA47A3566BE79E6D86137C89BBB0EF663AD030B00AD277446EF15DE3D43E50F0B'
decryptionKey='0CCC48459DCFCF33B13E1186B97E6241216DD3D9C565C3D7'
validation='SHA1' />

Unfortunately, it didn't help with the situation. Someone suggested to be "Windows serial" (not sure what it's called) needs to be the same (ie clones)? Thanks in advance.

Norman Fung

[THY02K]

so, anyone has experience in webfarm/load balancing?

[mmetzger]

Did you restart IIS on all machines after making the modifications?

[THY02K]

Jez... that's a good point I overlooked... what idiot I am, let me see.