Sorry one more this I have installed Web interface 5.3 and the newer licence server component on this server also. Are these two versions allowed to reside on the same server ? thanks Ronnie ________________________________ From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Hamilton, Ronnie Sent: 18 January 2010 09:27 To: thin@xxxxxxxxxxxxx Subject: [THIN] Citrix AAC Hi, I have another Citrix AAC question, I rebuilt an AAC server but I'm having trouble with the DCOM objects again. When a user tries to logon they get a message "An internal system error has occurred. Please contact your help desk or system administrator" When this happens the Citrix Logon Agent does not start as it should. If I replace the password of the service account I can now start the COM object. The problem is it seems to stop working on its own at some stage. I know it relates to DCOM and Dot Net. Question does anyone know if there are issues using Dot Net 3.5 with AAC 4.5 hot fix 4 or installing Dot.net 3.5 has the potential to fix the issue without removing any of the configuration. I have also found an article relating to the DCOM event ID which suggests running the Synciwam.vbs script for \Inetpub\AdminScripts directory. Is this a better option to start with? thanks Ronnie Visit our website : www.ltai.ie __________________________________________ Lufthansa Technik Airmotive Ireland Limited. Registered in Ireland. Reg. No. 45999. Registered Office: Naas Road, Rathcoole, Co.Dublin. Lufthansa Technik Airmotive Ireland Leasing Limited. Registered in Ireland. Reg. No. 140891. Registered Office: Naas Road, Rathcoole, Co.Dublin. __________________________________________ The information in this email and in any attachments is confidential and may be privileged. If you are not the intended recipient, please destroy this message, delete any copies held on your systems and notify the sender by return email. You should not read, retain, copy, disseminate, distribute, disclose or use this email or its contents in any way. Any such action is strictly prohibited. Thank you.