has now also been reported by another user in similar (maybe not identical) form as
This morning my nearly-three-week-uptime 2.1.1.0 had a flurry of these as final words, although the circumstances of its death are mysterious. No crashlog. No events found.
2025-08-07 05:01:45 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (Cannot access a disposed object.
2025-08-07 05:47:06 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (Cannot access a disposed object.
2025-08-07 06:00:06 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (Cannot access a disposed object.
2025-08-07 07:06:18 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (Cannot access a disposed object.
2025-08-07 07:20:03 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (The channel "" is retired)
2025-08-07 07:20:04 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (The channel "" is retired)
2025-08-07 07:20:04 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (The channel "" is retired)
2025-08-07 07:20:04 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (Cannot access a disposed object.
2025-08-07 07:25:08 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (The channel "" is retired)
2025-08-07 07:25:08 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (The channel "" is retired)
2025-08-07 07:25:08 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (The channel "" is retired)
2025-08-07 07:35:11 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (Cannot access a disposed object.
2025-08-07 07:58:42 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (Cannot access a disposed object.
I wasn’t actually up at 5, but system tends to wake itself at 3 for Windows Update tasks.
7:20 is the scheduled backup run. The run-script-after run was about 7:25:11 to 7:39:55.
2025-08-07 03:00:51 -04 - [Verbose-Duplicati.WebserverCore.Notifications.WebsocketAuthenticator-WebsocketConnectionTimeout]: WebSocket connection timed out after 60 seconds.
2025-08-07 05:01:45 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (Cannot access a disposed object.
Object name: 'Microsoft.Win32.SafeHandles.SafeWaitHandle'.)
System.AggregateException: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (Cannot access a disposed object.
Object name: 'Microsoft.Win32.SafeHandles.SafeWaitHandle'.)
---> System.ObjectDisposedException: Cannot access a disposed object.
Object name: 'Microsoft.Win32.SafeHandles.SafeWaitHandle'.
at System.Runtime.InteropServices.SafeHandle.InternalRelease(Boolean disposeOrFinalizeOperation)
at System.Threading.WaitHandle.ObtainSafeWaitHandles(ReadOnlySpan`1 waitHandles, Span`1 safeWaitHandles, Span`1 unsafeWaitHandles)
at System.Threading.WaitHandle.WaitMultiple(ReadOnlySpan`1 waitHandles, Boolean waitAll, Int32 millisecondsTimeout)
at Duplicati.GUI.TrayIcon.HttpServerConnection.<>c__DisplayClass47_0`1.<PerformRequestInternalAsync>b__0()
at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)
--- End of inner exception stack trace ---
2025-08-07 05:47:06 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (Cannot access a disposed object.
Object name: 'Microsoft.Win32.SafeHandles.SafeWaitHandle'.)
System.AggregateException: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (Cannot access a disposed object.
Object name: 'Microsoft.Win32.SafeHandles.SafeWaitHandle'.)
---> System.ObjectDisposedException: Cannot access a disposed object.
Object name: 'Microsoft.Win32.SafeHandles.SafeWaitHandle'.
at System.Runtime.InteropServices.SafeHandle.InternalRelease(Boolean disposeOrFinalizeOperation)
at System.Threading.WaitHandle.ObtainSafeWaitHandles(ReadOnlySpan`1 waitHandles, Span`1 safeWaitHandles, Span`1 unsafeWaitHandles)
at System.Threading.WaitHandle.WaitMultiple(ReadOnlySpan`1 waitHandles, Boolean waitAll, Int32 millisecondsTimeout)
at Duplicati.GUI.TrayIcon.HttpServerConnection.<>c__DisplayClass47_0`1.<PerformRequestInternalAsync>b__0()
at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)
--- End of inner exception stack trace ---
2025-08-07 06:00:06 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (Cannot access a disposed object.
Object name: 'Microsoft.Win32.SafeHandles.SafeWaitHandle'.)
System.AggregateException: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (Cannot access a disposed object.
Object name: 'Microsoft.Win32.SafeHandles.SafeWaitHandle'.)
---> System.ObjectDisposedException: Cannot access a disposed object.
Object name: 'Microsoft.Win32.SafeHandles.SafeWaitHandle'.
at System.Runtime.InteropServices.SafeHandle.InternalRelease(Boolean disposeOrFinalizeOperation)
at System.Threading.WaitHandle.ObtainSafeWaitHandles(ReadOnlySpan`1 waitHandles, Span`1 safeWaitHandles, Span`1 unsafeWaitHandles)
at System.Threading.WaitHandle.WaitMultiple(ReadOnlySpan`1 waitHandles, Boolean waitAll, Int32 millisecondsTimeout)
at Duplicati.GUI.TrayIcon.HttpServerConnection.<>c__DisplayClass47_0`1.<PerformRequestInternalAsync>b__0()
at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)
--- End of inner exception stack trace ---
2025-08-07 07:06:18 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (Cannot access a disposed object.
Object name: 'Microsoft.Win32.SafeHandles.SafeWaitHandle'.)
System.AggregateException: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (Cannot access a disposed object.
Object name: 'Microsoft.Win32.SafeHandles.SafeWaitHandle'.)
---> System.ObjectDisposedException: Cannot access a disposed object.
Object name: 'Microsoft.Win32.SafeHandles.SafeWaitHandle'.
at System.Runtime.InteropServices.SafeHandle.InternalRelease(Boolean disposeOrFinalizeOperation)
at System.Threading.WaitHandle.ObtainSafeWaitHandles(ReadOnlySpan`1 waitHandles, Span`1 safeWaitHandles, Span`1 unsafeWaitHandles)
at System.Threading.WaitHandle.WaitMultiple(ReadOnlySpan`1 waitHandles, Boolean waitAll, Int32 millisecondsTimeout)
at Duplicati.GUI.TrayIcon.HttpServerConnection.<>c__DisplayClass47_0`1.<PerformRequestInternalAsync>b__0()
at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)
--- End of inner exception stack trace ---
2025-08-07 07:20:03 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (The channel "" is retired)
System.AggregateException: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (The channel "" is retired)
---> CoCoL.RetiredException: The channel "" is retired
at CoCoL.Channel`1.WriteAsync(T value, ITwoPhaseOffer offer)
--- End of inner exception stack trace ---
2025-08-07 07:20:04 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (The channel "" is retired)
System.AggregateException: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (The channel "" is retired)
---> CoCoL.RetiredException: The channel "" is retired
at CoCoL.Channel`1.WriteAsync(T value, ITwoPhaseOffer offer)
--- End of inner exception stack trace ---
2025-08-07 07:20:04 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (The channel "" is retired)
System.AggregateException: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (The channel "" is retired)
---> CoCoL.RetiredException: The channel "" is retired
at CoCoL.Channel`1.WriteAsync(T value, ITwoPhaseOffer offer)
--- End of inner exception stack trace ---
2025-08-07 07:20:04 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (Cannot access a disposed object.
Object name: 'Microsoft.Win32.SafeHandles.SafeWaitHandle'.)
System.AggregateException: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (Cannot access a disposed object.
Object name: 'Microsoft.Win32.SafeHandles.SafeWaitHandle'.)
---> System.ObjectDisposedException: Cannot access a disposed object.
Object name: 'Microsoft.Win32.SafeHandles.SafeWaitHandle'.
at System.Runtime.InteropServices.SafeHandle.InternalRelease(Boolean disposeOrFinalizeOperation)
at System.Threading.WaitHandle.ObtainSafeWaitHandles(ReadOnlySpan`1 waitHandles, Span`1 safeWaitHandles, Span`1 unsafeWaitHandles)
at System.Threading.WaitHandle.WaitMultiple(ReadOnlySpan`1 waitHandles, Boolean waitAll, Int32 millisecondsTimeout)
at Duplicati.GUI.TrayIcon.HttpServerConnection.<>c__DisplayClass47_0`1.<PerformRequestInternalAsync>b__0()
at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)
--- End of inner exception stack trace ---
2025-08-07 07:20:11 -04 - [Information-Duplicati.Library.Main.Controller-StartingOperation]: The operation Backup has started
2025-08-07 07:20:11 -04 - [Profiling-Timer.Begin-Duplicati.Library.Main.Controller-RunBackup]: Starting - Running Backup
...
2025-08-07 07:25:07 -04 - [Profiling-Timer.Finished-Duplicati.Library.Main.Controller-RunBackup]: Running Backup took 0:00:04:56.003
2025-08-07 07:25:07 -04 - [Verbose-Duplicati.Library.SQLiteHelper.SQLiteLoader-CustomSQLiteOption]: Setting custom SQLite option 'cache_size=-333824'.
2025-08-07 07:25:07 -04 - [Profiling-Timer.Begin-Duplicati.Library.Main.Database.ExtensionMethods-ExecuteReader]: Starting - ExecuteReader: SELECT "ID", "Timestamp" FROM "Operation" ORDER BY "Timestamp" DESC LIMIT 1
2025-08-07 07:25:07 -04 - [Profiling-Timer.Finished-Duplicati.Library.Main.Database.ExtensionMethods-ExecuteReader]: ExecuteReader: SELECT "ID", "Timestamp" FROM "Operation" ORDER BY "Timestamp" DESC LIMIT 1 took 0:00:00:00.161
2025-08-07 07:25:08 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (The channel "" is retired)
System.AggregateException: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (The channel "" is retired)
---> CoCoL.RetiredException: The channel "" is retired
at CoCoL.Channel`1.WriteAsync(T value, ITwoPhaseOffer offer)
--- End of inner exception stack trace ---
2025-08-07 07:25:08 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (The channel "" is retired)
System.AggregateException: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (The channel "" is retired)
---> CoCoL.RetiredException: The channel "" is retired
at CoCoL.Channel`1.WriteAsync(T value, ITwoPhaseOffer offer)
--- End of inner exception stack trace ---
2025-08-07 07:25:08 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (The channel "" is retired)
System.AggregateException: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (The channel "" is retired)
---> CoCoL.RetiredException: The channel "" is retired
at CoCoL.Channel`1.WriteAsync(T value, ITwoPhaseOffer offer)
--- End of inner exception stack trace ---
2025-08-07 07:25:10 -04 - [Profiling-Timer.Begin-Duplicati.Library.Main.Database.ExtensionMethods-ExecuteNonQuery]: Starting - ExecuteNonQuery: PRAGMA optimize
2025-08-07 07:25:10 -04 - [Profiling-Timer.Finished-Duplicati.Library.Main.Database.ExtensionMethods-ExecuteNonQuery]: ExecuteNonQuery: PRAGMA optimize took 0:00:00:00.000
2025-08-07 07:35:11 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (Cannot access a disposed object.
Object name: 'Microsoft.Win32.SafeHandles.SafeWaitHandle'.)
System.AggregateException: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (Cannot access a disposed object.
Object name: 'Microsoft.Win32.SafeHandles.SafeWaitHandle'.)
---> System.ObjectDisposedException: Cannot access a disposed object.
Object name: 'Microsoft.Win32.SafeHandles.SafeWaitHandle'.
at System.Runtime.InteropServices.SafeHandle.InternalRelease(Boolean disposeOrFinalizeOperation)
at System.Threading.WaitHandle.ObtainSafeWaitHandles(ReadOnlySpan`1 waitHandles, Span`1 safeWaitHandles, Span`1 unsafeWaitHandles)
at System.Threading.WaitHandle.WaitMultiple(ReadOnlySpan`1 waitHandles, Boolean waitAll, Int32 millisecondsTimeout)
at Duplicati.GUI.TrayIcon.HttpServerConnection.<>c__DisplayClass47_0`1.<PerformRequestInternalAsync>b__0()
at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)
--- End of inner exception stack trace ---
2025-08-07 07:39:56 -04 - [Information-Duplicati.Library.Main.Controller-CompletedOperation]: The operation Backup has completed
2025-08-07 07:58:42 -04 - [Error-Duplicati.Server.Program-UnobservedTaskException]: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (Cannot access a disposed object.
Object name: 'Microsoft.Win32.SafeHandles.SafeWaitHandle'.)
System.AggregateException: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (Cannot access a disposed object.
Object name: 'Microsoft.Win32.SafeHandles.SafeWaitHandle'.)
---> System.ObjectDisposedException: Cannot access a disposed object.
Object name: 'Microsoft.Win32.SafeHandles.SafeWaitHandle'.
at System.Runtime.InteropServices.SafeHandle.InternalRelease(Boolean disposeOrFinalizeOperation)
at System.Threading.WaitHandle.ObtainSafeWaitHandles(ReadOnlySpan`1 waitHandles, Span`1 safeWaitHandles, Span`1 unsafeWaitHandles)
at System.Threading.WaitHandle.WaitMultiple(ReadOnlySpan`1 waitHandles, Boolean waitAll, Int32 millisecondsTimeout)
at Duplicati.GUI.TrayIcon.HttpServerConnection.<>c__DisplayClass47_0`1.<PerformRequestInternalAsync>b__0()
at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)
--- End of inner exception stack trace ---
Job database time is 7:25:42 and server database time is 8:13:03. I’m not sure when process actually went down. I noticed it later when I went to use it and it wasn’t there.
I wouldn’t have intentionally Quit it, as this was my uptime leader. Lots of threads and handles accumulated – and I don’t know if that could be a factor in it getting in trouble.