Recently I have installed Quality Center 10.0 and it's worked fine. From yesterday onwards we are not able to login to QC and getting "Invalid Server Response" when i try login to quality center with valid username and password. Please advice. Reference QC 10.0, Windows 2007, SQL DB,JBoss Application Server
Be sure the Quality Center Service is running on the App server. You may try restarting this service, as well. If, for some reason, the DB server was restarted, the App server can no longer connect to the DB. Always make sure the DB is up prior to starting the App Server and/or the QC Service.
I had the same problem, but I have cracked it. Apparently SQL server was set to Windows authentication only. After I reset it to SQL Server and Windows authentication mode everything worked fine again. Off course you have to restart SQL server service and HP Quality Center service (JBoss) as well after that in that order.
I'm having similar problems but during login, I can log fine it's when i want to change the parameters in the interation for a BPT that I get teh "invalid server response" error..or if I navigate from BPT to Test Lab the error appears.
Found out another reason that this can occur: if you have a copy of the 20qcbin.jar - even if it is named differently but has the JAR extemnsion - in the same folder JBoss will STILL try and use it and complile and use it with QC - and thus cause a dual (or mmore) output situation. JBoss has no idea which one to use and it breaks QC giving this error message. I think this also occurs if you have multiple siteadmin.xml config files - also with different names - it sees the xml file and tries to use it also. I had this problem and it took me 8 hours before I stumbled upon the fact though a chance comment that JBoss does not allow different named jar files in the same folder.
I just started having a similar problem. We have had QC 10 installed for about 3 years now. I am one of the Admins. Yesterday I tried to log in to see a colleagues access rights and got "Invalid Server Response". Here is the strange part. Everyone one else can sign in to QC with no problems. (5 users). This morning I could get into Site Admin and could look at my account, I changed the password and updated my account. Still no luck. Now, this afternoon I can't get into Site Admin.