Hi Colin, I have had exactly the same problems as you describe for many months. The service provider's support could not find the answer and all internet searches seemed to be fruitless. Then, whilst checking the hardware firewall settings, I stumbled on an option called M T U. M T U stands for Maximum Transmission Unit and by default is set to 1,500 (one thousand five hundred) by the firewall. In my case a quick internet search found that my provider only supports a maximum of 1,400 (one thousand four hundred) so the change was made. Every website, MSN and other applications which support internet downloads now work perfectly. It may not be the answer to your question but it certainly worth a try! Regards, Chris. -----Original Message----- From: access-uk@xxxxxxxxxxxxx [mailto:access-uk@xxxxxxxxxxxxx] On Behalf Of Colin Fowler Sent: 20 January 2005 10:00 To: access-uk@xxxxxxxxxxxxx Subject: [access-uk] msn query I'm using msn 5 with XP pro SP2, and just experienced the following problem. We could not send this file because the connection is blocked. Please contact your system administrator or Internet service provider; they may be able to enable file transfers. Col says: shit! I wonder if this something to do with the firewall settings again, I keep encountering difficulties with accessing certain links on websites, and I'm concerned that my firewall settings are too over stringent. If anyone can shed any light on this, then I'd be extremely grateful. Colin F IMPORTANT INFORMATION This e-mail and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please delete it from your system, do not use or disclose the information in any way and notify postmaster@xxxxxxxxxxxxxxxx Any views or opinions expressed in this e-mail are those of the sender and do not necessarily coincide with those of Dolphin Computer Access Ltd. ** To leave the list, send a message to:- ** access-uk-request@xxxxxxxxxxxxx ** and in the Subject line type ** unsubscribe ** For other list commands such as vacation mode, send a message, to ** access-uk-request@xxxxxxxxxxxxx with the Subject:- faq