SOLVED: Jellyfin server wont start

[Hans Erickson Lim]

When I open Jellyfin Tray it says "Could not start Jellyfin server process after specified wait period."

Here is the log

[2025-05-16 11:42:06.205 +08:00] [INF] [1] Main: Jellyfin version: "10.10.7"
[2025-05-16 11:42:06.223 +08:00] [INF] [1] Main: Environment Variables: ["[JELLYFIN_LOG_DIR, C:\ProgramData\Jellyfin\Server\log]"]
[2025-05-16 11:42:06.225 +08:00] [INF] [1] Main: Arguments: ["C:\Program Files\Jellyfin\Server\jellyfin.dll", "--datadir", "C:\ProgramData\Jellyfin\Server"]
[2025-05-16 11:42:06.226 +08:00] [INF] [1] Main: Operating system: "Microsoft Windows 10.0.26100"
[2025-05-16 11:42:06.227 +08:00] [INF] [1] Main: Architecture: X64
[2025-05-16 11:42:06.228 +08:00] [INF] [1] Main: 64-Bit Process: True
[2025-05-16 11:42:06.229 +08:00] [INF] [1] Main: User Interactive: True
[2025-05-16 11:42:06.230 +08:00] [INF] [1] Main: Processor count: 12
[2025-05-16 11:42:06.231 +08:00] [INF] [1] Main: Program data path: "C:\ProgramData\Jellyfin\Server"
[2025-05-16 11:42:06.231 +08:00] [INF] [1] Main: Log directory path: "C:\ProgramData\Jellyfin\Server\log"
[2025-05-16 11:42:06.232 +08:00] [INF] [1] Main: Config directory path: "C:\ProgramData\Jellyfin\Server\config"
[2025-05-16 11:42:06.233 +08:00] [INF] [1] Main: Cache path: "C:\ProgramData\Jellyfin\Server\cache"
[2025-05-16 11:42:06.234 +08:00] [INF] [1] Main: Temp directory path: "C:\Users\Admin\AppData\Local\Temp\jellyfin"
[2025-05-16 11:42:06.234 +08:00] [INF] [1] Main: Web resources path: "C:\Program Files\Jellyfin\Server\jellyfin-web"
[2025-05-16 11:42:06.235 +08:00] [INF] [1] Main: Application directory: "C:\Program Files\Jellyfin\Server\"
[2025-05-16 11:42:06.834 +08:00] [FTL] [1] Main: Unhandled Exception
System.InvalidOperationException: There is an error in XML document (1, 1).
---> System.Xml.XmlException: '.', hexadecimal value 0x00, is an invalid character. Line 1, position 1.
  at System.Xml.XmlTextReaderImpl.Throw(Exception e)
  at System.Xml.XmlTextReaderImpl.Throw(String res, String[] args)
  at System.Xml.XmlTextReaderImpl.ParseRootLevelWhitespace()
  at System.Xml.XmlTextReaderImpl.ParseDocumentContent()
  at System.Xml.XmlReader.MoveToContent()
  at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderMigrationOptions.Read4_MigrationOptions()
  at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
  at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Object obj, BindingFlags invokeAttr)
  --- End of inner exception stack trace ---
  at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events)
  at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader)
  at Emby.Server.Implementations.Serialization.MyXmlSerializer.DeserializeFromStream(Type type, Stream stream)
  at Emby.Server.Implementations.Serialization.MyXmlSerializer.DeserializeFromFile(Type type, String file)
  at Jellyfin.Server.Migrations.MigrationRunner.RunPreStartup(ServerApplicationPaths appPaths, ILoggerFactory loggerFactory)
  at Jellyfin.Server.Program.StartApp(StartupOptions options)
  at Jellyfin.Server.Program.<Main>(String[] args)
[2025-05-16 11:45:59.982 +08:00] [INF] [1] Main: Jellyfin version: "10.10.7"
[2025-05-16 11:45:59.998 +08:00] [INF] [1] Main: Environment Variables: ["[JELLYFIN_LOG_DIR, C:\ProgramData\Jellyfin\Server\log]"]
[2025-05-16 11:46:00.000 +08:00] [INF] [1] Main: Arguments: ["C:\Program Files\Jellyfin\Server\jellyfin.dll", "--datadir", "C:\ProgramData\Jellyfin\Server"]
[2025-05-16 11:46:00.002 +08:00] [INF] [1] Main: Operating system: "Microsoft Windows 10.0.26100"
[2025-05-16 11:46:00.003 +08:00] [INF] [1] Main: Architecture: X64
[2025-05-16 11:46:00.004 +08:00] [INF] [1] Main: 64-Bit Process: True
[2025-05-16 11:46:00.005 +08:00] [INF] [1] Main: User Interactive: True
[2025-05-16 11:46:00.006 +08:00] [INF] [1] Main: Processor count: 12
[2025-05-16 11:46:00.007 +08:00] [INF] [1] Main: Program data path: "C:\ProgramData\Jellyfin\Server"
[2025-05-16 11:46:00.008 +08:00] [INF] [1] Main: Log directory path: "C:\ProgramData\Jellyfin\Server\log"
[2025-05-16 11:46:00.008 +08:00] [INF] [1] Main: Config directory path: "C:\ProgramData\Jellyfin\Server\config"
[2025-05-16 11:46:00.009 +08:00] [INF] [1] Main: Cache path: "C:\ProgramData\Jellyfin\Server\cache"
[2025-05-16 11:46:00.010 +08:00] [INF] [1] Main: Temp directory path: "C:\Users\Admin\AppData\Local\Temp\jellyfin"
[2025-05-16 11:46:00.011 +08:00] [INF] [1] Main: Web resources path: "C:\Program Files\Jellyfin\Server\jellyfin-web"
[2025-05-16 11:46:00.012 +08:00] [INF] [1] Main: Application directory: "C:\Program Files\Jellyfin\Server\"
[2025-05-16 11:46:00.049 +08:00] [FTL] [1] Main: Unhandled Exception
System.InvalidOperationException: There is an error in XML document (1, 1).
---> System.Xml.XmlException: '.', hexadecimal value 0x00, is an invalid character. Line 1, position 1.
  at System.Xml.XmlTextReaderImpl.Throw(Exception e)
  at System.Xml.XmlTextReaderImpl.Throw(String res, String[] args)
  at System.Xml.XmlTextReaderImpl.ParseRootLevelWhitespace()
  at System.Xml.XmlTextReaderImpl.ParseDocumentContent()
  at System.Xml.XmlReader.MoveToContent()
  at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderMigrationOptions.Read4_MigrationOptions()
  at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
  at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Object obj, BindingFlags invokeAttr)
  --- End of inner exception stack trace ---
  at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events)
  at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader)
  at Emby.Server.Implementations.Serialization.MyXmlSerializer.DeserializeFromStream(Type type, Stream stream)
  at Emby.Server.Implementations.Serialization.MyXmlSerializer.DeserializeFromFile(Type type, String file)
  at Jellyfin.Server.Migrations.MigrationRunner.RunPreStartup(ServerApplicationPaths appPaths, ILoggerFactory loggerFactory)
  at Jellyfin.Server.Program.StartApp(StartupOptions options)
  at Jellyfin.Server.Program.<Main>(String[] args)
[2025-05-16 12:30:40.578 +08:00] [INF] [1] Main: Jellyfin version: "10.10.7"
[2025-05-16 12:30:40.604 +08:00] [INF] [1] Main: Environment Variables: ["[JELLYFIN_LOG_DIR, C:\ProgramData\Jellyfin\Server\log]"]
[2025-05-16 12:30:40.607 +08:00] [INF] [1] Main: Arguments: ["C:\Program Files\Jellyfin\Server\jellyfin.dll", "--datadir", "C:\ProgramData\Jellyfin\Server"]
[2025-05-16 12:30:40.608 +08:00] [INF] [1] Main: Operating system: "Microsoft Windows 10.0.26100"
[2025-05-16 12:30:40.609 +08:00] [INF] [1] Main: Architecture: X64
[2025-05-16 12:30:40.610 +08:00] [INF] [1] Main: 64-Bit Process: True
[2025-05-16 12:30:40.610 +08:00] [INF] [1] Main: User Interactive: True
[2025-05-16 12:30:40.611 +08:00] [INF] [1] Main: Processor count: 12
[2025-05-16 12:30:40.612 +08:00] [INF] [1] Main: Program data path: "C:\ProgramData\Jellyfin\Server"
[2025-05-16 12:30:40.612 +08:00] [INF] [1] Main: Log directory path: "C:\ProgramData\Jellyfin\Server\log"
[2025-05-16 12:30:40.613 +08:00] [INF] [1] Main: Config directory path: "C:\ProgramData\Jellyfin\Server\config"
[2025-05-16 12:30:40.614 +08:00] [INF] [1] Main: Cache path: "C:\ProgramData\Jellyfin\Server\cache"
[2025-05-16 12:30:40.614 +08:00] [INF] [1] Main: Temp directory path: "C:\Users\Admin\AppData\Local\Temp\jellyfin"
[2025-05-16 12:30:40.615 +08:00] [INF] [1] Main: Web resources path: "C:\Program Files\Jellyfin\Server\jellyfin-web"
[2025-05-16 12:30:40.616 +08:00] [INF] [1] Main: Application directory: "C:\Program Files\Jellyfin\Server\"
[2025-05-16 12:30:41.049 +08:00] [FTL] [1] Main: Unhandled Exception
System.InvalidOperationException: There is an error in XML document (1, 1).
---> System.Xml.XmlException: '.', hexadecimal value 0x00, is an invalid character. Line 1, position 1.
  at System.Xml.XmlTextReaderImpl.Throw(Exception e)
  at System.Xml.XmlTextReaderImpl.Throw(String res, String[] args)
  at System.Xml.XmlTextReaderImpl.ParseRootLevelWhitespace()
  at System.Xml.XmlTextReaderImpl.ParseDocumentContent()
  at System.Xml.XmlReader.MoveToContent()
  at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderMigrationOptions.Read4_MigrationOptions()
  at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
  at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Object obj, BindingFlags invokeAttr)
  --- End of inner exception stack trace ---
  at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events)
  at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader)
  at Emby.Server.Implementations.Serialization.MyXmlSerializer.DeserializeFromStream(Type type, Stream stream)
  at Emby.Server.Implementations.Serialization.MyXmlSerializer.DeserializeFromFile(Type type, String file)
  at Jellyfin.Server.Migrations.MigrationRunner.RunPreStartup(ServerApplicationPaths appPaths, ILoggerFactory loggerFactory)
  at Jellyfin.Server.Program.StartApp(StartupOptions options)
  at Jellyfin.Server.Program.<Main>(String[] args)

[Venson]

Hey have you recently run out of storage space?

[Hans Erickson Lim]

Hey have you recently run out of storage space?

Yes I think so why

[Hans Erickson Lim]

Solved it by deleting the migrations xml in the config folder