Open Source Virtual (Network) Printer for Windows that allows you to create PDFs, OCR text, and print images, with advanced features usually available only in enterprise solutions.
When I start my exe by double-clicking on it in Windows Explorer, printing is working as expected. When the exe is started by the Task Scheduler, the printing fails. The exe is running under the same user in both cases.
Windows Server 2019
ClawPDF v0.9.3
Working logs
2023-06-02 11:42:41.1337 [Debug] 14220-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue..ctor: Spool folder is 'C:\Users\user_s6svr01\AppData\Local\Temp\clawPDF\Spool'
2023-06-02 11:42:41.2037 [Debug] 14220-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue.Init: Temp folder is 'C:\Users\user_s6svr01\AppData\Local\Temp\clawPDF\Temp'
2023-06-02 11:42:41.2037 [Debug] 14220-1 (ProgramThread) clawSoft.clawPDF.Startup.MaybePipedStart.Run: Starting attempt 1:
2023-06-02 11:42:41.2167 [Debug] 14220-1 (ProgramThread) clawSoft.clawPDF.Startup.MaybePipedStart.TrySendPipeMessage: Found another running instance of clawPDF, so we send our data there
2023-06-02 11:42:41.2167 [Debug] 14220-1 (ProgramThread) clawSoft.clawPDF.Startup.NewPrintJobStart.EnsureJobFileIsInSpoolPath: JobInfo file from printer is not in our spool folder (C:\Users\user_s6svr01\AppData\Local\Temp\clawPDF\Spool) - we'll move it there
2023-06-02 11:42:41.2407 [Debug] 14220-1 (ProgramThread) clawSoft.clawPDF.Startup.MaybePipedStart.TrySendPipeMessage: Pipe message successfully sent
2023-06-02 11:42:41.2407 [Debug] 14220-1 (ProgramThread) clawSoft.clawPDF.Startup.MaybePipedStart.Run: TrySendPipeMessage: True
2023-06-02 11:42:41.2407 [Debug] 14220-1 (ProgramThread) clawSoft.clawPDF.Threading.ThreadManager.WaitForThreads: Waiting for all synchronized threads to end
2023-06-02 11:42:41.2407 [Debug] 14220-1 (ProgramThread) clawSoft.clawPDF.Threading.ThreadManager.WaitForThreads: All synchronized threads have ended
2023-06-02 11:42:41.2467 [Debug] 14220-1 (ProgramThread) clawSoft.clawPDF.Threading.ThreadManager.Shutdown: Shutting down the application
2023-06-02 11:42:41.2467 [Debug] 14220-1 (ProgramThread) clawSoft.clawPDF.Threading.ThreadManager.Shutdown: Exiting...
2023-06-02 11:42:41.2677 [Trace] 11288-8 (ProcessingThread) clawSoft.clawPDF.Workflow.WorkflowFactory.CreateWorkflow: Creating Workflow
2023-06-02 11:42:41.3447 [Debug] 11288-8 (ProcessingThread) clawSoft.clawPDF.Workflow.WorkflowFactory.CreateWorkflow: Profile: <Default Profile> (GUID DefaultGuid)
2023-06-02 11:42:41.3637 [Debug] 11288-8 (ProcessingThread) clawSoft.clawPDF.Core.Jobs.AbstractJob.NumberOfPagesFromSourceFiles: Number of pages from source files: 1
2023-06-02 11:42:41.3637 [Debug] 11288-8 (ProcessingThread) clawSoft.clawPDF.Core.Jobs.AbstractJob.get_NumberOfCopies: Number of copies from source files: 1
Non-working logs
2023-06-02 11:45:14.1732 [Debug] 11944-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue..ctor: Spool folder is 'C:\Users\user_s6svr01\AppData\Local\Temp\clawPDF\Spool'
2023-06-02 11:45:14.2452 [Debug] 11944-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue.Init: Temp folder is 'C:\Users\user_s6svr01\AppData\Local\Temp\clawPDF\Temp'
2023-06-02 11:45:14.2522 [Debug] 11944-1 (ProgramThread) clawSoft.clawPDF.Startup.MaybePipedStart.Run: Starting attempt 1:
2023-06-02 11:45:14.2522 [Debug] 11944-1 (ProgramThread) clawSoft.clawPDF.Startup.MaybePipedStart.TryStartApplication: Starting pipe server
2023-06-02 11:45:14.2522 [Debug] 11944-1 (ProgramThread) clawSoft.clawPDF.Threading.ThreadManager.StartPipeServerThread: Starting pipe server thread
2023-06-02 11:45:14.2652 [Debug] 11944-1 (ProgramThread) clawSoft.clawPDF.Startup.MaybePipedStart.TryStartApplication: Reloading settings
2023-06-02 11:45:14.3462 [Debug] 11944-1 (ProgramThread) clawSoft.clawPDF.Startup.MaybePipedStart.TryStartApplication: Finding spooled jobs
2023-06-02 11:45:14.3462 [Debug] 11944-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue.FindSpooledJobs: Looking for spooled jobs in 'C:\Users\user_s6svr01\AppData\Local\Temp\clawPDF\Spool'
2023-06-02 11:45:14.3462 [Debug] 11944-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue.FindSpooledJobs: Searching for spooled jobs
2023-06-02 11:45:14.3462 [Debug] 11944-1 (ProgramThread) clawSoft.clawPDF.Startup.NewPrintJobStart.EnsureJobFileIsInSpoolPath: JobInfo file from printer is not in our spool folder (C:\Users\user_s6svr01\AppData\Local\Temp\clawPDF\Spool) - we'll move it there
2023-06-02 11:45:14.3622 [Error] 11944-1 (ProgramThread) clawSoft.clawPDF.Startup.MaybePipedStart.TryStartApplication: There was an error while starting the application System.UnauthorizedAccessException: Access to the path is denied.
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.File.InternalMove(String sourceFileName, String destFileName, Boolean checkHost)
at clawSoft.clawPDF.Startup.NewPrintJobStart.MoveSpoolFile(String infFile, String spoolFolder, ApplicationSettings applicationSettings)
at clawSoft.clawPDF.Startup.NewPrintJobStart.EnsureJobFileIsInSpoolPath()
at clawSoft.clawPDF.Startup.NewPrintJobStart.StartApplication()
at clawSoft.clawPDF.Startup.MaybePipedStart.TryStartApplication()
The access denied happens when ClawPDF tries to create a file in C:\AppData\Local\Temp\clawPDF\Spool. When printing is working, this directory is not used.
When I start my exe by double-clicking on it in Windows Explorer, printing is working as expected. When the exe is started by the Task Scheduler, the printing fails. The exe is running under the same user in both cases.
Working logs
Non-working logs
The access denied happens when ClawPDF tries to create a file in
C:\AppData\Local\Temp\clawPDF\Spool. When printing is working, this directory is not used.