Got the following error when trying to use WI3 with XPe FR3 (+ hotfixes) and Single Sign on turned on "Error: The MetaFrame server farm cannot process your request at this time. Error: Citrix XML Service request too large, more than 4096 bytes [413 request too large]." Implementing the fix in point 2 from article <http://support.citrix.com/article/entry.jspa?entryID=2205> http://support.citrix.com/article/entry.jspa?entryID=2205 Fixes it. However we have to increase this from 4096 to approx 80,000 to get this to work for a user who is a member of approx 500 groups. Seem a bit excessive to have to take this form 4 k to 80k to get it to work. My understanding is we need approx 32 bytes per group. We have an average of 250 group memberships per user with the max at 800. Any ideas if the XML service is stable at say 100K or will not cause issues? What is impact on servers doing XML requests or network traffic. Should we set on all servers or only servers handling XML requests? Malcolm *********************************************************************************** The Royal Bank of Scotland plc. Registered in Scotland No 90312. Registered Office: 36 St Andrew Square, Edinburgh EH2 2YB. Authorized and regulated by the Financial Services Authority This e-mail message is confidential and for use by the addressee only. If the message is received by anyone other than the addressee, please return the message to the sender by replying to it and then delete the message from your computer. Internet e-mails are not necessarily secure. The Royal Bank of Scotland plc does not accept responsibility for changes made to this message after it was sent. Whilst all reasonable care has been taken to avoid the transmission of viruses, it is the responsibility of the recipient to ensure that the onward transmission, opening or use of this message and any attachments will not adversely affect its systems or data. No responsibility is accepted by The Royal Bank of Scotland plc in this regard and the recipient should carry out such virus and other checks as it considers appropriate. Visit our websites at: http://www.rbos.com http://www.rbsmarkets.com ********************************************************************************