Security

cannot upload with "proxy error"

w0000641
New Member

I cannot upload log file from web-service.

Splunk said "('Cannot connect to proxy.', error('Tunnel connection failed: 403 Forbidden',)) ".

How can I fix it ?

web_service.log

2018-11-30 11:23:33,822 ERROR [5c009f25217f83e0333050] proxy:200 - ('Cannot connect to proxy.', error('Tunnel connection failed: 403 Forbidden',))
Traceback (most recent call last):
File "/opt/splunk/lib/python2.7/site-packages/splunk/appserver/mrsparkle/controllers/proxy.py", line 163, in index return self.uploadFile(args, sessionKey, uri)
File "/opt/splunk/lib/python2.7/site-packages/splunk/appserver/mrsparkle/controllers/proxy.py", line 267, in uploadFile verify=False #allow self signed certificates
File "/opt/splunk/lib/python2.7/site-packages/requests/api.py", line 88, in post return request('post', url, data=data, **kwargs)
File "/opt/splunk/lib/python2.7/site-packages/requests/api.py", line 44, in request return session.request(method=method, url=url, **kwargs)
File "/opt/splunk/lib/python2.7/site-packages/requests/sessions.py", line 456, in request resp = self.send(prep, **send_kwargs)
File "/opt/splunk/lib/python2.7/site-packages/requests/sessions.py", line 559, in send r = adapter.send(request, **kwargs)
File "/opt/splunk/lib/python2.7/site-packages/requests/adapters.py", line 378, in send raise ProxyError(e)
ProxyError: ('Cannot connect to proxy.', error('Tunnel connection failed: 403 Forbidden',))

0 Karma

hijacob
Communicator

Hi,

have a look at this answer https://answers.splunk.com/answers/210955/data-uploader-why-am-i-receiving-a-cannot-connect.html#ans...

"What happens if you try and set this in splunk-launch.conf
no_proxy=127.0.0.1,localhost"

Greetings,
Jacob

0 Karma

hijacob
Communicator

Does it work now?

0 Karma
Got questions? Get answers!

Join the Splunk Community Slack to learn, troubleshoot, and make connections with fellow Splunk practitioners in real time!

Meet up IRL or virtually!

Join Splunk User Groups to connect and learn in-person by region or remotely by topic or industry.

Get Updates on the Splunk Community!

Make Your Machine Data AI-Ready in Splunk

Every team is getting ready for AI agents.   Thursday, November 12, 2026  |  11AM  PST / 2PM EST   ...

Splunk Asynchronous Forwarding Explained

Splunk asynchronous forwarding is often misunderstood as simply setting autoLBVolume. That is not quite right. ...

How to Monitor AI Agents with Splunk Agent Observability

Let’s say I’m running a travel planning AI app in production. A user asks for three concise hotel options in ...