Hi, I am having a problem for 2 weeks. Microsoft Exchange Information Storeservice stops unexpectedly, and these two weeks I did not find why, now I have tested, that it stops then users trys to attach document via exchangeweb interface. Then someone is trying to attach a document it takes a while,then an error happens, that service is unavailable, and at the same time thisservice stops (Information store). I tried to find something in knowlege basebut didn't find nothing that point my situation. Could you help me please? Thanks.. Halil

Did you Check your antivirus settings? It might block OWA from attaching files? Deli

Thanks, quick reply. I usetheSecurity messagingExchangeV.7.0 of Trend Micro.I don't think AV. Because I trydifferent attechment files(xls,doc,jpeg...) My system properties Windows 2003 standart server SP2, Exchange 2003 SP2 Halil

Canyou disable your AV and verify that problem is still there? Deli

Hi, I did try your suggestionbut that problem is still. Halil

So this might be a permissions problem? Exchange not being able to write to a temporary file location when uploading? You might want to try FileMon from Sysinternals to check your server when uploading to check for errors http://www.microsoft.com/technet/sysinternals/utilities/filemon.mspx Deli