What is the problem?
Otoprint constant connection loss
What did you already try to solve it?
New to 3D printing, not sure where to start
Have you tried running in safe mode and if so did it solve the issue?
WRITE HERE
Complete Logs
octoprint.log, serial.log or output on terminal tab at a minimum, browser error console if UI issue ... no logs, no support! Not log excerpts, complete logs.)
Recv: ok
Send: N7 M190 S60*89
Recv: ok
Send: N8 G28*27
Recv: T:32.42 /0.00 B:60.56 /60.00 @:0 B@:0
Recv: echo:busy: processing
Recv: T:32.37 /0.00 B:60.38 /60.00 @:0 B@:0
Recv: echo:busy: processing
Recv: T:32.40 /0.00 B:60.27 /60.00 @:0 B@:0
Recv: echo:busy: processing
Recv: T:32.40 /0.00 B:60.12 /60.00 @:0 B@:0
Recv: echo:busy: processing
Recv: T:32.40 /0.00 B:59.77 /60.00 @:0 B@:0
Recv: echo:busy: processing
Recv: T:32.32 /0.00 B:59.58 /60.00 @:0 B@:127
Recv: echo:busy: processing
Recv: echo:busy: processing
Recv: T:32.27 /0.00 B:59.83 /60.00 @:0 B@:127
Recv: echo:busy: processing
Recv: T:32.24 /0.00 B:60.00 /60.00 @:0 B@:0
Recv: echo:busy: processing
Recv: T:32.40 /0.00 B:60.00 /60.00 @:0 B@:0
Recv: echo:busy: processing
Recv: T:32.37 /0.00 B:59.97 /60.00 @:0 B@:0
Recv: echo:busy: processing
Recv: T:32.27 /0.00 B:59.79 /60.00 @:0 B@:0
Recv: echo:busy: processing
Recv: T:32.32 /0.00 B:59.71 /60.00 @:0 B@:0
Recv: echo:busy: processing
Recv: T:32.34 /0.00 B:59.58 /60.00 @:0 B@:127
Recv: X:161.50 Y:110.00 Z:10.00 E:0.00 Count X:12920 Y:8800 Z:4000
Recv: ok
Send: N9 M420 S1*110
Recv: echo:Invalid mesh.
Recv: Error:Failed to enable Bed Leveling
Changing monitoring state from "Printing" to "Error: Failed to enable Bed Leveling"
Send: M112
Send: N10 M112*16
Send: N11 M104 T0 S0*17
Send: N12 M140 S0*86
Changing monitoring state from "Error: Failed to enable Bed Leveling" to "Offline (Error: Failed to enable Bed Leveling)"
Connection closed, closing down monitor
Changing monitoring state from "Offline" to "Opening serial connection"
Connecting to port COM4, baudrate 115200
Changing monitoring state from "Opening serial connection" to "Connecting"
Connected to: Serial<id=0x7eaa358, open=True>(port='COM4', baudrate=115200, bytesize=8, parity='N', stopbits=1, timeout=10.0, xonxoff=False, rtscts=False, dsrdtr=False), starting monitor
Send: N0 M110 N0*125
Recv: echo:start
Recv: External Reset
Recv: Marlin 2.0.7
Send: N0 M110 N0*125
Recv:
Recv: echo: Last Updated: 2020-09-29 | Author: (Kazules, Ender-3)
Recv: echo:Compiled: Oct 4 2020
Recv: echo: Free Memory: 11583 PlannerBufferBytes: 1200
Recv: echo:V81 stored settings retrieved (721 bytes; crc 48098)
Recv: echo:SD card ok
Recv: ok
Send: N0 M110 N0*125
Changing monitoring state from "Connecting" to "Operational"
Recv: ok
Send: N0 M110 N0*125
Recv: ok
Send: N1 M115*39
Recv: FIRMWARE_NAME:Marlin 2.0.7 (Oct 4 2020 18:37:31) SOURCE_CODE_URL:https://github.com/MarlinFirmware/Marlin PROTOCOL_VERSION:1.0 MACHINE_TYPE:Marlin 2.0.7 EXTRUDER_COUNT:1 UUID:cede2a2f-41a2-4748-9b12-c55c62f367ff
Recv: Cap:SERIAL_XON_XOFF:0
Recv: Cap:BINARY_FILE_TRANSFER:0
Recv: Cap:EEPROM:1
Recv: Cap:VOLUMETRIC:0
Recv: Cap:AUTOREPORT_TEMP:1
Recv: Cap:PROGRESS:0
Recv: Cap:PRINT_JOB:1
Recv: Cap:AUTOLEVEL:1
Recv: Cap:RUNOUT:0
Recv: Cap:Z_PROBE:1
Recv: Cap:LEVELING_DATA:1
Recv: Cap:BUILD_PERCENT:0
Recv: Cap:SOFTWARE_POWER:0
Recv: Cap:TOGGLE_LIGHTS:0
Recv: Cap:CASE_LIGHT_BRIGHTNESS:0
Recv: Cap:EMERGENCY_PARSER:0
Recv: Cap:PROMPT_SUPPORT:0
Recv: Cap:SDCARD:1
Recv: Cap:AUTOREPORT_SD_STATUS:0
Recv: Cap:LONG_FILENAME:0
Recv: Cap:THERMAL_PROTECTION:1
Recv: Cap:MOTION_MODES:0
Recv: Cap:ARCS:0
Recv: Cap:BABYSTEPPING:1
Recv: Cap:CHAMBER_TEMPERATURE:0
Recv: ok
Send: M20
Recv: Begin file list
Recv: echo:Cannot open subdir
Recv: echo:Cannot open subdir
Recv: echo:start
Recv: Marlin 2.0.7
Recv:
Recv: echo: Last Updated: 2020-09-29 | Author: (Kazules, Ender-3)
Recv: echo:Compiled: Oct 4 2020
Recv: echo: Free Memory: 11583 PlannerBufferBytes: 1200
Unexpected error while reading serial port, please consult octoprint.log for details: SerialException: 'GetOverlappedResult failed (WindowsError(5, 'Access is denied.'))' @ comm.py:_readline:2916
Please see https://faq.octoprint.org/serialerror for possible reasons of this.
Changing monitoring state from "Operational" to "Offline (Error: SerialException: 'GetOverlappedResult failed (WindowsError(5, 'Access is denied.'))' @ comm.py:_readline:2916)"
Connection closed, closing down monitor
Changing monitoring state from "Offline" to "Detecting serial connection"
Performing autodetection with 1 port/baudrate candidates: COM4@115200
Trying port COM4, baudrate 115200
Connecting to port COM4, baudrate 115200
Handshake attempt #1 with timeout 2.0s
Connected to: Serial<id=0xa727f98, open=True>(port='COM4', baudrate=115200, bytesize=8, parity='N', stopbits=1, timeout=2.0, xonxoff=False, rtscts=False, dsrdtr=False), starting monitor
Send: N0 M110 N0*125
Recv: echo:start
Changing monitoring state from "Detecting serial connection" to "Operational"
Recv: External Reset
Recv: Marlin 2.0.7
Send: N0 M110 N0*125
Recv:
Recv: echo: Last Updated: 2020-09-29 | Author: (Kazules, Ender-3)
Recv: echo:Compiled: Oct 4 2020
Recv: echo: Free Memory: 11583 PlannerBufferBytes: 1200
Recv: echo:V81 stored settings retrieved (721 bytes; crc 48098)
Recv: echo:SD card ok
Recv: ok
Send: N1 M115*39
Recv: FIRMWARE_NAME:Marlin 2.0.7 (Oct 4 2020 18:37:31) SOURCE_CODE_URL:https://github.com/MarlinFirmware/Marlin PROTOCOL_VERSION:1.0 MACHINE_TYPE:Marlin 2.0.7 EXTRUDER_COUNT:1 UUID:cede2a2f-41a2-4748-9b12-c55c62f367ff
Recv: Cap:SERIAL_XON_XOFF:0
Recv: Cap:BINARY_FILE_TRANSFER:0
Recv: Cap:EEPROM:1
Recv: Cap:VOLUMETRIC:0
Recv: Cap:AUTOREPORT_TEMP:1
Recv: Cap:PROGRESS:0
Recv: Cap:PRINT_JOB:1
Recv: Cap:AUTOLEVEL:1
Recv: Cap:RUNOUT:0
Recv: Cap:Z_PROBE:1
Recv: Cap:LEVELING_DATA:1
Recv: Cap:BUILD_PERCENT:0
Recv: Cap:SOFTWARE_POWER:0
Recv: Cap:TOGGLE_LIGHTS:0
Recv: Cap:CASE_LIGHT_BRIGHTNESS:0
Recv: Cap:EMERGENCY_PARSER:0
Recv: Cap:PROMPT_SUPPORT:0
Recv: Cap:SDCARD:1
Recv: Cap:AUTOREPORT_SD_STATUS:0
Recv: Cap:LONG_FILENAME:0
Recv: Cap:THERMAL_PROTECTION:1
Recv: Cap:MOTION_MODES:0
Recv: Cap:ARCS:0
Recv: Cap:BABYSTEPPING:1
Recv: Cap:CHAMBER_TEMPERATURE:0
Recv: ok
Send: M21
Recv: echo:SD card ok
Recv: ok
Send: M105
Recv: ok T:31.67 /0.00 B:41.65 /0.00 @:0 B@:0
Send: M20
Recv: Begin file list
Recv: echo:Cannot open subdir
Recv: echo:Cannot open subdir
Recv: echo:start
Recv: Marlin 2.0.7
Recv:
Recv: echo: Last Updated: 2020-09-29 | Author: (Kazules, Ender-3)
Recv: echo:Compiled: Oct 4 2020
Recv: echo: Free Memory: 11583 PlannerBufferBytes: 1200
Communication timeout while idle, trying to trigger response from printer. Configure long running commands or increase communication timeout if that happens regularly on specific commands or long moves.
Send: M155 S2
Communication timeout while idle, trying to trigger response from printer. Configure long running commands or increase communication timeout if that happens regularly on specific commands or long moves.
Send: M105
No response from printer after 3 consecutive communication timeouts, considering it dead. Configure long running commands or increase communication timeout if that happens regularly on specific commands or long moves.
Changing monitoring state from "Operational" to "Offline (Error: Too many consecutive timeouts, printer still connected and alive?)"
Connection closed, closing down monitor
Changing monitoring state from "Offline" to "Opening serial connection"
Connecting to port COM4, baudrate 115200
Changing monitoring state from "Opening serial connection" to "Connecting"
Connected to: Serial<id=0x8286860, open=True>(port='COM4', baudrate=115200, bytesize=8, parity='N', stopbits=1, timeout=10.0, xonxoff=False, rtscts=False, dsrdtr=False), starting monitor
Send: N0 M110 N0*125
Recv: echo:start
Recv: External Reset
Send: N0 M110 N0*125
Recv: Marlin 2.0.7
Recv:
Recv: echo: Last Updated: 2020-09-29 | Author: (Kazules, Ender-3)
Recv: echo:Compiled: Oct 4 2020
Recv: echo: Free Memory: 11583 PlannerBufferBytes: 1200
Recv: echo:V81 stored settings retrieved (721 bytes; crc 48098)
Recv: echo:SD card ok
Recv: ok
Send: N0 M110 N0*125
Changing monitoring state from "Connecting" to "Operational"
Recv: ok
Send: N0 M110 N0*125
Recv: ok
Send: N1 M115*39
Recv: FIRMWARE_NAME:Marlin 2.0.7 (Oct 4 2020 18:37:31) SOURCE_CODE_URL:https://github.com/MarlinFirmware/Marlin PROTOCOL_VERSION:1.0 MACHINE_TYPE:Marlin 2.0.7 EXTRUDER_COUNT:1 UUID:cede2a2f-41a2-4748-9b12-c55c62f367ff
Recv: Cap:SERIAL_XON_XOFF:0
Recv: Cap:BINARY_FILE_TRANSFER:0
Recv: Cap:EEPROM:1
Recv: Cap:VOLUMETRIC:0
Recv: Cap:AUTOREPORT_TEMP:1
Recv: Cap:PROGRESS:0
Recv: Cap:PRINT_JOB:1
Recv: Cap:AUTOLEVEL:1
Recv: Cap:RUNOUT:0
Recv: Cap:Z_PROBE:1
Recv: Cap:LEVELING_DATA:1
Recv: Cap:BUILD_PERCENT:0
Recv: Cap:SOFTWARE_POWER:0
Recv: Cap:TOGGLE_LIGHTS:0
Recv: Cap:CASE_LIGHT_BRIGHTNESS:0
Recv: Cap:EMERGENCY_PARSER:0
Recv: Cap:PROMPT_SUPPORT:0
Recv: Cap:SDCARD:1
Recv: Cap:AUTOREPORT_SD_STATUS:0
Recv: Cap:LONG_FILENAME:0
Recv: Cap:THERMAL_PROTECTION:1
Recv: Cap:MOTION_MODES:0
Recv: Cap:ARCS:0
Recv: Cap:BABYSTEPPING:1
Recv: Cap:CHAMBER_TEMPERATURE:0
Recv: ok
Send: M20
Recv: Begin file list
Recv: echo:Cannot open subdir \xff\xff\xff\xff\xff\xff\xff\xff.\xff\xff\xff
Recv: End file list
Recv: ok
Send: M155 S2
Recv: echo:Settings Stored (721 bytes; crc 28482)
Changing monitoring state from "Operational" to "Starting"
Communication timeout while printing, trying to trigger response from printer. Configure long running commands or increase communication timeout if that happens regularly on specific commands or long moves.
Send: N0 M110 N0*125
Communication timeout while printing, trying to trigger response from printer. Configure long running commands or increase communication timeout if that happens regularly on specific commands or long moves.
Communication timeout while printing, trying to trigger response from printer. Configure long running commands or increase communication timeout if that happens regularly on specific commands or long moves.
Communication timeout while printing, trying to trigger response from printer. Configure long running commands or increase communication timeout if that happens regularly on specific commands or long moves.
Communication timeout while printing, trying to trigger response from printer. Configure long running commands or increase communication timeout if that happens regularly on specific commands or long moves.
No response from printer after 6 consecutive communication timeouts, considering it dead. Configure long running commands or increase communication timeout if that happens regularly on specific commands or long moves.
Changing monitoring state from "Starting" to "Offline (Error: Too many consecutive timeouts, printer still connected and alive?)"
Connection closed, closing down monitor
Changing monitoring state from "Offline" to "Opening serial connection"
Connecting to port COM4, baudrate 115200
Changing monitoring state from "Opening serial connection" to "Connecting"
Connected to: Serial<id=0x8256630, open=True>(port='COM4', baudrate=115200, bytesize=8, parity='N', stopbits=1, timeout=10.0, xonxoff=False, rtscts=False, dsrdtr=False), starting monitor
Send: N0 M110 N0*125
Recv: echo:start
Recv: External Reset
Recv: Marlin 2.0.7
Send: N0 M110 N0*125
Recv:
Recv: echo: Last Updated: 2020-09-29 | Author: (Kazules, Ender-3)
Recv: echo:Compiled: Oct 4 2020
Recv: echo: Free Memory: 11583 PlannerBufferBytes: 1200
Recv: echo:V81 stored settings retrieved (721 bytes; crc 8399)
Recv: echo:SD card ok
Recv: ok
Send: N0 M110 N0*125
Changing monitoring state from "Connecting" to "Operational"
Recv: ok
Send: N0 M110 N0*125
Recv: ok
Send: N1 M115*39
Recv: FIRMWARE_NAME:Marlin 2.0.7 (Oct 4 2020 18:37:31) SOURCE_CODE_URL:https://github.com/MarlinFirmware/Marlin PROTOCOL_VERSION:1.0 MACHINE_TYPE:Marlin 2.0.7 EXTRUDER_COUNT:1 UUID:cede2a2f-41a2-4748-9b12-c55c62f367ff
Recv: Cap:SERIAL_XON_XOFF:0
Recv: Cap:BINARY_FILE_TRANSFER:0
Recv: Cap:EEPROM:1
Recv: Cap:VOLUMETRIC:0
Recv: Cap:AUTOREPORT_TEMP:1
Recv: Cap:PROGRESS:0
Recv: Cap:PRINT_JOB:1
Recv: Cap:AUTOLEVEL:1
Recv: Cap:RUNOUT:0
Recv: Cap:Z_PROBE:1
Recv: Cap:LEVELING_DATA:1
Recv: Cap:BUILD_PERCENT:0
Recv: Cap:SOFTWARE_POWER:0
Recv: Cap:TOGGLE_LIGHTS:0
Recv: Cap:CASE_LIGHT_BRIGHTNESS:0
Recv: Cap:EMERGENCY_PARSER:0
Recv: Cap:PROMPT_SUPPORT:0
Recv: Cap:SDCARD:1
Recv: Cap:AUTOREPORT_SD_STATUS:0
Recv: Cap:LONG_FILENAME:0
Recv: Cap:THERMAL_PROTECTION:1
Recv: Cap:MOTION_MODES:0
Recv: Cap:ARCS:0
Recv: Cap:BABYSTEPPING:1
Recv: Cap:CHAMBER_TEMPERATURE:0
Recv: ok
Send: M20
Recv: Begin file list
Recv: echo:Cannot open subdir \xff\xff\xff\xff\xff\xff\xff\xff.\xff\xff\xff
Recv: echo:Cannot open subdir 6B9B5A~1
Communication timeout while idle, trying to trigger response from printer. Configure long running commands or increase communication timeout if that happens regularly on specific commands or long moves.
Send: M155 S2
Communication timeout while idle, trying to trigger response from printer. Configure long running commands or increase communication timeout if that happens regularly on specific commands or long moves.
Send: M105
No response from printer after 3 consecutive communication timeouts, considering it dead. Configure long running commands or increase communication timeout if that happens regularly on specific commands or long moves.
Changing monitoring state from "Operational" to "Offline (Error: Too many consecutive timeouts, printer still connected and alive?)"
Connection closed, closing down monitor
Additional information about your setup
OctoPrint version, OctoPi version, printer, firmware, browser, operating system, ... as much data as possible
Windows