I’ve got a program that runs over my local area network. All the users run it from a mapped drive letter. Lately the users have been getting “Delayed Write Failed” error messages. Microsoft has several articles on this but none of them have panned out. The software vendor claims it’s not their issue because when its run the machine acting as host for it, it runs great. So as long as no network is involved, all is well. Try to run it over the network and we get … Windows was unable to save all the data for the file x. The data has been lost. This error may be caused by a failure of your computer hardware or network connection. Please try to save this file elsewhere. The error itself would indicate a networking issue but all my other programs run fine over the network.