The program exited with a strange error code. SubprocessException: Child returned 3221226505


my WebODM told me to report this error as it was a strange one.
I have no idea what happen. Here is the error message

File “D:\WebODM\resources\app\apps\ODM\opendm\”, line 106, in run
raise SubprocessException(“Child returned {}”.format(retcode), retcode)
opendm.system.SubprocessException: Child returned 3221226505
===== Done, human-readable information to follow… =====

[ERROR] The program exited with a strange error code. Please report it at

I hope it makes sense to some of you.
thanks in advance for the help.


1 Like


Sorry for the trouble!

The latest/most current version which likely has a fix for this issue is v1.9.11 Build 47:

Would you mind checking for Updates within WebODM by going to Tools → Check For Updates in the top menu?

1 Like

Hi guys,
I am getting the same error but when I check for updates, it tells me that the certificate has expired and to visit WebODM Drone Software - OpenDroneMap for updates.
what can I do to update?

1 Like

Ah, at this juncture, just wait a bit with us. We’ll have to push another/updated certificate to fix that. It should be soon, but you know, holidays so a bit of extra latitude would be appreciated :slight_smile:

1 Like

Ok. No probs… I have a new data set coming on the 28th but I’ll use the command line.
Enjoy the festivities :wink:


Certificate should be fixed (and update coming up!)


Santa Piero :rofl:


:joy: :santa: :joy:


This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.