User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.2.11) Gecko/20101012 Firefox/3.6.11 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.2.11) Gecko/20101012 Firefox/3.6.11 Hi, I have upgraded our network files server from w2k3 to w2k8 r2. Now i have troubles to download files onto mapped network shares on this server. we do not have had any problems with w2k3. downloading files to a local drive is also no problem. i have found out, that downloading a file directly to a network share on the w2k8 R2 server, don't makes any problem too. see the following examples for saving destanations: to: c:\file.ext is OK to: \\server\share\file.ext is OK ! (server is w2k8 r2) to: Z:\file.ext (Z is a mapped network share on a w2k8 r2 server) is CORRUPT !! best regards franz Reproducible: Always