OSError: [Errno 10013] - BlenderKit might get blocked by antivirus (Commodo, McAffee, Norton360)

[Poduhvat]

Describe the bug

When installed or activated within Blender 3.2.2 at windows 10 makes Blender bugging i.e. working extremely slow, with 15 to 20 seconds reaction to even simplest commands like rotating or moving default cube. When deactivated or removed Blender works normally.

Expected behavior

Should react in a moment like Blender works without this kit or with previous version of Blender kit.

Screenshots/video

No response

Logs

Traceback (most recent call last):
File "[Blender 3.2 file path]\3.2\scripts\addons\blenderkit\timer.py", line 49, in timer
results = daemon_lib.get_reports(app_id)
File "[Blender 3.2 file path]\3.2\scripts\addons\blenderkit\daemon_lib.py", line 53, in get_reports
resp = session.get(url, json=data)
File "[Blender 3.2 file path]\3.2\python\lib\site-packages\requests\sessions.py", line 542, in get
return self.request('GET', url, **kwargs)
File "[Blender 3.2 file path]\3.2\python\lib\site-packages\requests\sessions.py", line 529, in request
resp = self.send(prep, **send_kwargs)
File "[Blender 3.2 file path]\3.2\python\lib\site-packages\requests\sessions.py", line 645, in send
r = adapter.send(request, **kwargs)
File "[Blender 3.2 file path]\3.2\python\lib\site-packages\requests\adapters.py", line 519, in send
raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPConnectionPool(host='127.0.0.1', port=62485): Max retries exceeded with url: /report (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x0000019888C85CC0>: Failed to establish a new connection: [WinError 10061] No connection could be made
because the target machine actively refused it'))

Environment

• BlenderKit version: the last one 3.1.7
• Blender version: 3.2.2
• Operating system: windows 10
• additional specifics?

Additional information

No response

[MicheleGiunto]

Same thing happens to me. Here's more info:

Traceback (most recent call last):
File "[Blender 3.2 file path]\3.2\scripts\addons\blenderkit\timer.py", line 49, in timer
results = daemon_lib.get_reports(app_id)
File "[Blender 3.2 file path]\3.2\scripts\addons\blenderkit\daemon_lib.py", line 53, in get_reports
resp = session.get(url, json=data)
File "[Blender 3.2 file path]\3.2\python\lib\site-packages\requests\sessions.py", line 542, in get
return self.request('GET', url, **kwargs)
File "[Blender 3.2 file path]\3.2\python\lib\site-packages\requests\sessions.py", line 529, in request
resp = self.send(prep, **send_kwargs)
File "[Blender 3.2 file path]\3.2\python\lib\site-packages\requests\sessions.py", line 645, in send
r = adapter.send(request, **kwargs)
File "[Blender 3.2 file path]\3.2\python\lib\site-packages\requests\adapters.py", line 519, in send
raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPConnectionPool(host='127.0.0.1', port=62485): Max retries exceeded with url: /report (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x0000019888C85CC0>: Failed to establish a new connection: [WinError 10061] No connection could be made
because the target machine actively refused it'))

in loop, freezing Blender at every single attempt of connection

[Poduhvat]

I am not a software developer, just a user. I find out a problem and report it.

[agajdosi]

Hi @Poduhvat, thank you for your report. Also thank you @MicheleGiunto for the logs, it seems the problems are the same: the add-on starts a background server which downloads the assets and in your cases the server is not responding - meaning it probably did not start for some reason. If you want to debug, there is a file located at: C:/Users/<username>/blenderkit_data/blenderkit_daemon_62485.log which contains logs from the server - from it we should get why it did not start.

If you paste us the log, we will find a solution for you. It could be an antivirus, we had cases like that before... or something else.

In all cases we recently created a fix for better handling of this situation so the Blender does not lag, even though the search will not work, and the add-on will print out the messages to GUI, so it is more understandable what is going on, right now it can be quite hidden if one does not dig into the console.

[Poduhvat]

Thank you for the answer agajdosi. I had solved the problem by installing older version of Blenderkit 3.0.5 which works perfectly. So in order to find what is problem maybe you just need to compare changes which are made in 3.1.7 version relative to 3.0.5. version.

[agajdosi]

@Poduhvat I am glad 3.0.5 works fine for you. For the requests on models, images etc. it uses threads, which were announced by Blender devs as not completely safe to us. At the moment of 3.0.5 we had several reports of Blender just randomly crashing which is quite annoying from the perspective of the user and also developer of the software - as basically both cannot do much more than just hoping...

We investigated and tested several proposals for the solution and one which we evaluated as the best was to move the threading outside of the Blender into separate program running in the background - the daemon server which is part of the add-on since 3.1.0. For most users it fixed the problems and we are pretty happy with the overall results (and so we move more and more computing and tasks from the add-on to the daemon server). However the downside is... that on some systems (mostly Windows with some strange antiviruses) the daemon might not start which then leads to the error @MicheleGiunto posted. There the add-on tries to communicate with the local daemon server, but the requests fails as the daemon is not running and action is required to find out and fix.

It does not happen often at least from out data. But that does not mean we are not working on fixing it. I fully understand how frustrating it can be that something just does not work out of the box. So we recently pushed a PR which improves the error message to the users and also prevents the add-on from lags when daemon is not running - the add-on will not search and basically not work, but at least the Blender will not be affected. And now we are working on making the start more robust. But one thing is our side and another are the hundreds of antiviruses which sometimes might block the daemon - we slowly need to cover all of those and that will require some feedback from users and also some time. We already covered some, but it is a long run unfortunately.

[MicheleGiunto]

@agajdosi this is the daemon log

unhandled exception during asyncio.run() shutdown
task: <Task finished name='Task-1' coro=<_run_app() done, defined at [Blender 3.2 file path]\3.2\scripts\addons\blenderkit\dependencies\Windows\aiohttp\web.py:287> exception=OSError(10013, "error while attempting to bind on address ('[host IP]', [port?]): An attempt was made to access a socket in a way forbidden by its access permissions")>
Traceback (most recent call last):
File "[Blender 3.2 file path]\3.2\scripts\addons\blenderkit\dependencies\Windows\aiohttp\web.py", line 514, in run_app
loop.run_until_complete(main_task)
File "[Blender 3.2 file path]\3.2\python\lib\asyncio\base_events.py", line 641, in run_until_complete
return future.result()
File "[Blender 3.2 file path]\3.2\scripts\addons\blenderkit\dependencies\Windows\aiohttp\web.py", line 413, in _run_app
await site.start()
File "[Blender 3.2 file path]\3.2\scripts\addons\blenderkit\dependencies\Windows\aiohttp\web_runner.py", line 121, in start
self._server = await loop.create_server(
File "[Blender 3.2 file path]\3.2\python\lib\asyncio\base_events.py", line 1493, in create_server
raise OSError(err.errno, 'error while attempting '
OSError: [Errno 10013] error while attempting to bind on address ('[host IP]', [port?]): An attempt was made to access a socket in a way forbidden by its access permissions
Traceback (most recent call last):
File "[Blender 3.2 file path]\3.2\scripts\addons\blenderkit\daemon\daemon.py", line 227, in
web.run_app(server, host='[host IP]', port=args.port)
File "[Blender 3.2 file path]\3.2\scripts\addons\blenderkit\dependencies\Windows\aiohttp\web.py", line 514, in run_app
loop.run_until_complete(main_task)
File "[Blender 3.2 file path]\3.2\python\lib\asyncio\base_events.py", line 641, in run_until_complete
return future.result()
File "[Blender 3.2 file path]\3.2\scripts\addons\blenderkit\dependencies\Windows\aiohttp\web.py", line 413, in _run_app
await site.start()
File "[Blender 3.2 file path]\3.2\scripts\addons\blenderkit\dependencies\Windows\aiohttp\web_runner.py", line 121, in start
self._server = await loop.create_server(
File "[Blender 3.2 file path]\3.2\python\lib\asyncio\base_events.py", line 1493, in create_server
raise OSError(err.errno, 'error while attempting '
OSError: [Errno 10013] error while attempting to bind on address ('[host IP]', [port?]): An attempt was made to access a socket in a way forbidden by its access permissions

[agajdosi]

Thanks @MicheleGiunto! It could that the port is already used by another application, in the Blender preferences for the BlenderKit add-on, there is an option called daemon port, please try to select another port number and lets see if that fixes the problem. If any port works for you, then please let me know, we will need investigate, why your system prevents opening any port from Blender, but for now the easiest bet is that the port is occupied, not blocked, so please try select another port.

[J-ester93]

@Poduhvat
This worked for me:
the problem in my case was the firewall (Comodo), anyway I think all of them works in the same way.
Open firewall c.panel, find the activity panel, look for -unlock application- panel, a list will comes out in a new window, run the list and look for all blenderkit related activitities and unlock them by pressing right mouse and chosing unlock.

That's all folks!

bye

[agajdosi]

@J-ester93 Thank you for your logs and all the information! I am glad it works for you now.

I have created a follow up issue #271 in which we will catch the OSError: [Errno 10013] and will print an information how to get over it - the solution you have provided. Previously we have added a catch for another OS/Win Error connected to Commodo, but it seems it can block in various ways with various errors as results. 😿