What you've done by changing the resolution is forcing the session to use less display (video) memory. Therefore you can drag your apps to the second screen. The default value of a farm is set to 5625KB. If you go in and change this to the maximum value of 8192KB that is supported via the GUI, it seems to resolve the issue in most cases for dual monitor setups. Open the Citrix Delivery Services Console (AKA Access Management Console) Select the Farm Right click on the XenApp Farm and select Properties Select Display under Server Default > HDX Broadcast Change the Maximum memory to use for each session's graphics (KB) to 8192 Select OK Close the Citrix Delivery Services Console The following article has some great information too, and may be easier to follow: http://geekswithblogs.net/wallabyfan/archive/2006/04/12/74907.aspx Cheers, Jeremy. From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Hamilton, Ronnie Sent: Friday, 9 July 2010 10:36 PM To: thin@xxxxxxxxxxxxx Subject: [THIN] Re: Duel Monitor Setup definatly a friday ... ..I had set all published apps to 24 bit true colour and when set to 16 bit alls well ________________________________ From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Hamilton, Ronnie Sent: 09 July 2010 15:04 To: thin@xxxxxxxxxxxxx Subject: [THIN] Duel Monitor Setup Hi, Can someone point me to a document on how to set up published applications on dual monitors. I am running XenApp 4.5 SP3 on w2k3 with client 12.03 on Vista. I cant even get MS Office applications to function correctly. I am unsure if I need to have specific way in which I publish the applications, Its set to Full screen at the moment. the behaviour which I am experiencing is that the application will open on the left monitor but not totally filling the bottom half on the screen. When I try to move it to the right hand screen it will not drag across. Not sure if its just Friday, but this isnt making much sence at the moment 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. ##################################################################################### Confidentiality and Privilege Notice This document is intended solely for the named addressee. The information contained in the pages is confidential and contains legally privileged information. If you are not the addressee indicated in this message (or responsible for delivery of the message to such person), you may not copy or deliver this message to anyone, and you should destroy this message and kindly notify the sender by reply email. Confidentiality and legal privilege are not waived or lost by reason of mistaken delivery to you. #####################################################################################