Error on load: System.IO.IOException: The process cannot access the file : error in event viewer when users want to view documents from this third party deployed scan solution

Error on load: System.IO.IOException: The process cannot access the file
'\\server1\SCANSHARED\.pdf' because it is being used by another process.
   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, String msgPath, Boolean bFromProxy)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share)
   at System.IO.File.WriteAllBytes(String path, Byte[] bytes)
   at abc.Scan.Layouts.ICC.Scan.View.Page_Load(Object sender, EventArgs e)
I faced this  error in event viewer  when users want to view documents from this third party deployed scan solution
here I have two WFS servers  and they configured with load balancing in F5 .
when I enable both servers in F5 I receive this error messages in 2nd server,
when users want to view documents
adil

Do you have antiVirus installed on the sharepoint servers?
These folders may have to be excluded from antivirus scanning when you use file-level antivirus software in SharePoint. If these folders are not excluded, you may see unexpected behavior. For example, you may receive "access denied" error messages when files
are uploaded.
Please follow this KB and exclude the folders from Scanning.
http://support.microsoft.com/kb/952167
Please remember to mark your question as answered &Vote helpful,if this solves/helps your problem. ****************************************************************************************** Thanks -WS MCITP(SharePoint 2010, 2013) Blog: http://wscheema.com/blog

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    We are exporting crystal reports into PDF using  ExportToHttpResponse (code snippet below)
          // Getting the type of the report file which has been selected by the user. (which will be REPORT CLASS type)
    Type objType = Type.GetType("WebApplication1.Reports." + ReportName);
    ReportClass SEPREport = (ReportClass)Activator.CreateInstance(objType);
    // GetTypedDataSet()returns an instance of typed data set.
    SEPREport.SetDataSource(GetTypedDataSet());
    SEPREport.ExportToHttpResponse(ExportFormatType.PortableDocFormat, Response, true, ReportName );
    Now we have created these REPORTS using Basic Crystal Report 10.5, which comes bundled with Visual Studio 2008 and .Net Framework 3.0.
    Now on our machines, we have never experienced any issues.
    BUT on the DEV server (web server) which has .net Framework 3.0 and in its GAC its has CRYSTAL DLLs version 11.5 (required to create an Object of ReportClass and its related functions) ; sometimes we get the following error while exporting crystal report to pdf:
    The process cannot access the file because it is being used by another process. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
    Exception Details: System.Runtime.InteropServices.COMException: The process cannot access the file because it is being used by another process.
    Source Error:
    An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
    Stack Trace:
    [COMException (0x80004005): The process cannot access the file because it is being used by another process.
       CrystalDecisions.ReportAppServer.Controllers.ReportSourceClass.Export(ExportOptions pExportOptions, RequestContext pRequestContext) +0
       CrystalDecisions.ReportSource.EromReportSourceBase.ExportToStream(ExportRequestContext reqContext) +525
       CrystalDecisions.CrystalReports.Engine.FormatEngine.ExportToStream(ExportRequestContext reqContext) +681
       CrystalDecisions.CrystalReports.Engine.ReportDocument.ExportToStream(ExportOptions options) +105
       CrystalDecisions.CrystalReports.Engine.ReportDocument.ExportToHttpResponse(ExportOptions options, HttpResponse response, Boolean asAttachment, String attachmentName) +163
       CrystalDecisions.CrystalReports.Engine.ReportDocument.ExportToHttpResponse(ExportFormatType formatType, HttpResponse response, Boolean asAttachment, String attachmentName) +132
       MSSB.FATools.UI.PlannerReport.CreatePDFDocument() +732
       MSSB.FATools.UI.PlannerReport.btnCreatePDF_Click(Object sender, EventArgs e) +45
       System.Web.UI.WebControls.Button.OnClick(EventArgs e) +104
       System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +107
       System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +7
       System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +11
       System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
       System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5615

    This is a cross post:
    The process cannot access the file because it is being used by another proc
    Do not cross post. See the [Rules of Engagement|https://www.sdn.sap.com/irj/sdn/wiki?path=/display/home/rulesofEngagement]
    Setting this tread as answered and locking.
    - Ludek

  • "The process cannot access the file ..." occurs when export crystal report

    We are using a web application developed in VS 2005, .NET 2.0 with the bundled Crystal Reports version 10.2.3600.0 running on a Windows 2003 Standard server with 4GB Ram and Dual CPU's. Periodically we are still receiving the following error in our production environment:
    InnerException:
    The process cannot access the file because it is being used by another process.
       at CrystalDecisions.ReportAppServer.Controllers.ReportSourceClass.Export(ExportOptions pExportOptions, RequestContext pRequestContext)
       at CrystalDecisions.ReportSource.EromReportSourceBase.ExportToStream(ExportRequestContext reqContext)
       at CrystalDecisions.CrystalReports.Engine.FormatEngine.ExportToStream(ExportRequestContext reqContext)
       at CrystalDecisions.CrystalReports.Engine.ReportDocument.ExportToStream(ExportOptions options)
       at CrystalDecisions.CrystalReports.Engine.ReportDocument.ExportToStream(ExportFormatType formatType)
    This is occuring at the point on the code where the report is being exported to a PDF. Exporting the report to Excel does not appear to cause the error.
                    Stream outStream = report.ExportToStream(ExportFormatType.PortableDocFormat);
                    byte[] charStream = new byte[outStream.Length];
                    outStream.Read(charStream, 0, (int)outStream.Length);
                    if ((charStream != null) && (charStream.Length > 0))
                        HttpContext.Current.Response.ContentType = "application/pdf";
                        HttpContext.Current.Response.OutputStream.Write(charStream, 0, charStream.Length);
                        HttpContext.Current.Response.End();
                report.Close();
                report.Dispose();
                ds.Dispose();
                GC.Collect();
    Closing and disposing of the report and dataset (xsd) are followed by a call for garbage collection. We are unable to produce the error in our development environmennt and have not at this point been unable to pinpoint a problematic report. The development team members do have SP1 installed. The report limit has not been changed from the standard of 75 jobs.  Reviewed the following document, Re: "The process cannot access the file ..." occurs when export crystal report However this applies to VS 2008. Any suggestions to resolve the issue would be greatly appreciated.
    Thanks,
    Joe

    Good morning Joe
    For more details re. loading please see the following resources:
    [Crystal Reports 2008 Component Engine Scalability|http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/7025839b-00d4-2b10-33b4-cf0aa9e08412?quicklink=index&overridelayout=true]
    [How Can I Optimize Scalability?|http://msdn.microsoft.com/en-us/library/ms225519.aspx]
    [Choosing the Right Business Objects SDK for Your Needs|http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/40bccdfd-88a6-2b10-1da1-c47a54b625a7]
    To answer your questions:
    Is it correct to presume that the physical number of CPU's is not factored into the CPL? So that a Server with 2 or more processors does not increase the 3 concurrent requests? Therefore 2 CPU's would not increase the CPL limit to 6 processes?
    - Server with 2 or more processors does not increase the 3 concurrent requests.
    What would be an alternate solution to this limit be, considering the report requests could increase significantly?
    - Only way around this would be to web farm the solution
    If only only 3 reports can be processed at the same time. If one or more of the reports currently processing is taking longer due to receiving large amounts of data, how does that affect the queue? And what is stored in the queue, data and/or the report? Is this something that could consume memory?
    - The report can take as much time as it needs. The result is that one license will not be released until the report is done. There is no data stored, just a pointer to the report. However queued apps will chew up memory, some times to the point of the server becoming unresponsive
    I have read in the documentation on this site, that the dataset sent to the engine is copied in memory during report construction. So if a large amount of data is requested for a report (as an example 10+ MB) Could enough users requesting reports drive the memory up because memory usage doubled due to the dataset?
    - Absolutely. See [Crystal Reports Guide to ADO.NET|http://www.sdn.sap.com/irj/boc/index?rid=/library/uuid/401c4455-a31d-2b10-ae96-fa57af5aec20].
    Understanding the the CR DLL's are loaded on the first report request, do they get released at some point time due to inactivity or garbage collection? How much memory usage could be consumed when they load and stay resident?
    - No they do not. Not as long as the application is running.
    Ludek

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