Under Windows, MAX_PATH = 260 : that's the maximum length of an absolute file name (excluding UNC file names). The limit of 256 characters is set by the Zip format since the length of the file name is stored in the header as a single byte. As previously noted, NTFS permits longer file names and, for reasons known only to Microsoft, a silly prefix is required. Getting around the 256 character limit of the zip format is tricky (and should not be expected) however, it should be possible to deal with longer filenames if they are relative to a specified directory. I hope this clears up what is and isn't possible. -- James Turner On 31/08/2011 17:00, Patrick Kolla-ten Venne wrote: > Actually, I think the feature you are referring to, is actually much > older than 64 bit. > Are you referring to the \\?\ extended-length path prefix? > http://msdn.microsoft.com/en-us/library/aa365247%28v=vs.85%29.aspx#maxpath >> Hi, >> The Windows 64 bit systems allow file names> 256 characters.Our Zip gives >> message that file is 'Open'. >> Sorry I am not able to test this situation at my end currently, therefore I >> am asking you without trying out the latest Dll's. >> Please Advice. >> RegardsAllan > > ----------- > To unsubscribe from this list, send an empty e-mail > message to: > delphizip-request@xxxxxxxxxxxxx > and put the word unsubscribe in the subject. > ----------- To unsubscribe from this list, send an empty e-mail message to: delphizip-request@xxxxxxxxxxxxx and put the word unsubscribe in the subject.