ServiceNow instance redirecting to another instance

[matthew_magee1]

We have an instance of SN now running on a server:
http://pcsng-a0001:80

When I try to open this instance, I am redirected to another instance:

http://pcsng-a0001:443/ess

We are using the top instance as our 'gold' instance. I've added some update sets to this instance recently, but this only started happening last night/this morning...I think.

I've checked various redirect properties but can't find anything w/ a value of http://pcsng-a0001:443/ess

Any ideas as to why this might be happening?

Thanks

[MKhan1]

Do you have SAML configured on your instances?. Check that once.

[matthew_magee1]

I turned on Web Console in FFX to see if any errors were being thrown.

One error that keeps coming up when i try to access the 'GOLD' instance is 'g_user is not defined'

None of my other instances throw this error

Maybe this is the culprit?

[matthew_magee1]

Back in June, I wrote a UI Script that redirects users who do not have a role to an ESS page. Even though it was not active, it was included in an update set and activated on the 'GOLD' instance.

So i decativated it and everything is good to go.

Thanks all for your responses

MM