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System.UnauthorizedAccessException - Using win forms application opening file - UrgentFileStream fileStream = new FileStream(@"K:\Development\Projects\POReport.asp", FileMode.Open); Which throws an exception Unhandled Exception: System.UnauthorizedAccessException: Access to the path "K:\Development\Projects\POReport.asp" is denied I could understand if this was an ASP.NET issue however as it's run using the interactive account it's very strange. Any ideas on how I can progress this issue e.g. are there tools I can use to determine why were getting access to denied. hi,
a) make sure you *really* have access to that file b) have a look at FileMon from www.sysinternals.com --- Dominick Baier, DevelopMentor http://www.leastprivilege.com Show quoteHide quote > I have some very simple code > > FileStream fileStream = new > FileStream(@"K:\Development\Projects\POReport.asp", FileMode.Open); > > Which throws an exception > > Unhandled Exception: System.UnauthorizedAccessException: Access to the > path "K:\Development\Projects\POReport.asp" is denied > > I could understand if this was an ASP.NET issue however as it's run > using the interactive account it's very strange. > > Any ideas on how I can progress this issue e.g. are there tools I can > use to determine why were getting access to denied. > Thanks however
1) I've given Everyone access to the file and no one else has it open. I've used file handle by sysinternals to verify this 2) The file mon output is shown below 16:10:04 EAASPParser.exe:4516 IRP_MJ_CREATE K:\Development\Projects\EAASPParser\POReport.asp ACCESS DENIED Attributes: N Options: Open Is there anything else I can try? Show quoteHide quote "Dominick Baier" <dbaier@pleasepleasenospam_leastprivilege.com> wrote in message news:4580be63135558c8a3ba71d115a0@news.microsoft.com... > hi, > a) make sure you *really* have access to that file > b) have a look at FileMon from www.sysinternals.com > > --- > Dominick Baier, DevelopMentor > http://www.leastprivilege.com > >> I have some very simple code >> >> FileStream fileStream = new >> FileStream(@"K:\Development\Projects\POReport.asp", FileMode.Open); >> >> Which throws an exception >> >> Unhandled Exception: System.UnauthorizedAccessException: Access to the >> path "K:\Development\Projects\POReport.asp" is denied >> >> I could understand if this was an ASP.NET issue however as it's run >> using the interactive account it's very strange. >> >> Any ideas on how I can progress this issue e.g. are there tools I can >> use to determine why were getting access to denied. >> > > Did it say what account was denied access when you tried to open it? That
might help establish the problem. For example, if the anonymous user was used and anonymous user is not configured to be part of "everyone" in the local security policy, then "everyone" would not be sufficient. The proper way to solve that problem would be to fix the authentication problem so that you can authenticate remotely rather than giving the anonymous user access. Joe K. -- Show quoteHide quoteJoe Kaplan-MS MVP Directory Services Programming Co-author of "The .NET Developer's Guide to Directory Services Programming" http://www.directoryprogramming.net -- "Matt Adamson" <Adamson_matt***@hotmail.com> wrote in message news:uf1a5Sb1GHA.1252@TK2MSFTNGP04.phx.gbl... > Thanks however > > 1) I've given Everyone access to the file and no one else has it open. > I've used file handle by sysinternals to verify this > 2) The file mon output is shown below > > 16:10:04 EAASPParser.exe:4516 IRP_MJ_CREATE > K:\Development\Projects\EAASPParser\POReport.asp ACCESS DENIED Attributes: > N Options: Open > > Is there anything else I can try? > > "Dominick Baier" <dbaier@pleasepleasenospam_leastprivilege.com> wrote in > message news:4580be63135558c8a3ba71d115a0@news.microsoft.com... >> hi, >> a) make sure you *really* have access to that file >> b) have a look at FileMon from www.sysinternals.com >> >> --- >> Dominick Baier, DevelopMentor >> http://www.leastprivilege.com >> >>> I have some very simple code >>> >>> FileStream fileStream = new >>> FileStream(@"K:\Development\Projects\POReport.asp", FileMode.Open); >>> >>> Which throws an exception >>> >>> Unhandled Exception: System.UnauthorizedAccessException: Access to the >>> path "K:\Development\Projects\POReport.asp" is denied >>> >>> I could understand if this was an ASP.NET issue however as it's run >>> using the interactive account it's very strange. >>> >>> Any ideas on how I can progress this issue e.g. are there tools I can >>> use to determine why were getting access to denied. >>> >> >> > > access means read/write
you should explicitly specify which access you need in the FileStream ctor... --- Dominick Baier, DevelopMentor http://www.leastprivilege.com Show quoteHide quote > Thanks however > > 1) I've given Everyone access to the file and no one else has it open. > I've > used file handle by sysinternals to verify this > 2) The file mon output is shown below > 16:10:04 EAASPParser.exe:4516 IRP_MJ_CREATE > K:\Development\Projects\EAASPParser\POReport.asp ACCESS DENIED > Attributes: N Options: Open > > Is there anything else I can try? > > "Dominick Baier" <dbaier@pleasepleasenospam_leastprivilege.com> wrote > in message news:4580be63135558c8a3ba71d115a0@news.microsoft.com... > >> hi, >> a) make sure you *really* have access to that file >> b) have a look at FileMon from www.sysinternals.com >> --- >> Dominick Baier, DevelopMentor >> http://www.leastprivilege.com >>> I have some very simple code >>> >>> FileStream fileStream = new >>> FileStream(@"K:\Development\Projects\POReport.asp", FileMode.Open); >>> Which throws an exception >>> >>> Unhandled Exception: System.UnauthorizedAccessException: Access to >>> the path "K:\Development\Projects\POReport.asp" is denied >>> >>> I could understand if this was an ASP.NET issue however as it's run >>> using the interactive account it's very strange. >>> >>> Any ideas on how I can progress this issue e.g. are there tools I >>> can use to determine why were getting access to denied. >>> Thanks I actually just tried this
FileStream fileStream = new FileStream((@"K:\Development\Projects\POReport.asp", FileMode.Open, FileAccess.Read); and it worked. I still don't understand why omitting the third param FileMode.Open caused this to fail. The MSDN documentation states it is given read / write access to the file so should why should this be an issue? Show quoteHide quote "Dominick Baier" <dbaier@pleasepleasenospam_leastprivilege.com> wrote in message news:4580be63135918c8a4157a550b40@news.microsoft.com... > access means read/write > > you should explicitly specify which access you need in the FileStream > ctor... > > --- > Dominick Baier, DevelopMentor > http://www.leastprivilege.com > >> Thanks however >> >> 1) I've given Everyone access to the file and no one else has it open. >> I've >> used file handle by sysinternals to verify this >> 2) The file mon output is shown below >> 16:10:04 EAASPParser.exe:4516 IRP_MJ_CREATE >> K:\Development\Projects\EAASPParser\POReport.asp ACCESS DENIED >> Attributes: N Options: Open >> >> Is there anything else I can try? >> >> "Dominick Baier" <dbaier@pleasepleasenospam_leastprivilege.com> wrote >> in message news:4580be63135558c8a3ba71d115a0@news.microsoft.com... >> >>> hi, >>> a) make sure you *really* have access to that file >>> b) have a look at FileMon from www.sysinternals.com >>> --- >>> Dominick Baier, DevelopMentor >>> http://www.leastprivilege.com >>>> I have some very simple code >>>> >>>> FileStream fileStream = new >>>> FileStream(@"K:\Development\Projects\POReport.asp", FileMode.Open); >>>> Which throws an exception >>>> >>>> Unhandled Exception: System.UnauthorizedAccessException: Access to >>>> the path "K:\Development\Projects\POReport.asp" is denied >>>> >>>> I could understand if this was an ASP.NET issue however as it's run >>>> using the interactive account it's very strange. >>>> >>>> Any ideas on how I can progress this issue e.g. are there tools I >>>> can use to determine why were getting access to denied. >>>> > > 
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