# No proxy that matches: group=sources and proxy=\*.\* were found.
**URL:** https://discourse.paraview.org/t/no-proxy-that-matches-group-sources-and-proxy-were-found/17308
**Category:** ParaView Support
**Created:** [November 14, 2025, 3:50pm UTC](https://discourse.paraview.org/t/no-proxy-that-matches-group-sources-and-proxy-were-found/17308 "2025-11-14T15:50:37Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@deanwormer](https://discourse.paraview.org/u/deanwormer)
#### Post date: [November 14, 2025, 3:50pm UTC](https://discourse.paraview.org/t/no-proxy-that-matches-group-sources-and-proxy-were-found/17308/1 "2025-11-14T15:50:37Z")
I’m trying to open an nc file, however I get the following error:
`ERROR: In vtkSIProxyDefinitionManager.cxx, line 518`
`vtkSIProxyDefinitionManager (0x60000183c100): No proxy that matches: group=sources and proxy=`_`.`_` were found.`
This is the same issue for 5.13.0 and 5.13.1 versions that I have installed for ssh tunneling.
How do I solve this?
thanks
Janet
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### Author:  [@cory.quammen](https://discourse.paraview.org/u/cory.quammen)
#### Post date: [November 14, 2025, 4:08pm UTC](https://discourse.paraview.org/t/no-proxy-that-matches-group-sources-and-proxy-were-found/17308/2 "2025-11-14T16:08:15Z")
Hi Janet, do you have a small dataset you can share that leads to this result?
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### Author:  [@deanwormer](https://discourse.paraview.org/u/deanwormer)
#### Post date: [November 14, 2025, 4:09pm UTC](https://discourse.paraview.org/t/no-proxy-that-matches-group-sources-and-proxy-were-found/17308/3 "2025-11-14T16:09:47Z")
Unfortunately the work isn’t published yet. However, I am unable to load any nc files.
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### Author:  [@deanwormer](https://discourse.paraview.org/u/deanwormer)
#### Post date: [November 14, 2025, 5:02pm UTC](https://discourse.paraview.org/t/no-proxy-that-matches-group-sources-and-proxy-were-found/17308/4 "2025-11-14T17:02:28Z")
For example, I tried to load this data file and no joy. What could be the issue?
> **[Sample File | Atmosphere Discipline Team Imager Products](https://atmosphere-imager.gsfc.nasa.gov/continuity/products/cloud-properties-l3-cosp/sample-file)**
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### Author:  [@deanwormer](https://discourse.paraview.org/u/deanwormer)
#### Post date: [November 14, 2025, 5:11pm UTC](https://discourse.paraview.org/t/no-proxy-that-matches-group-sources-and-proxy-were-found/17308/5 "2025-11-14T17:11:16Z")
Nm - I deleted all of my config files and restarted. Something must have caused a conflict down the line with my settings.
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### Author:  [@cory.quammen](https://discourse.paraview.org/u/cory.quammen)
#### Post date: [November 14, 2025, 6:15pm UTC](https://discourse.paraview.org/t/no-proxy-that-matches-group-sources-and-proxy-were-found/17308/6 "2025-11-14T18:15:44Z")
That’s good. Did you happen to make backup copies of your settings files when resetting them? If so, could I see them?
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### Author:  [@deanwormer](https://discourse.paraview.org/u/deanwormer)
#### Post date: [November 17, 2025, 8:25pm UTC](https://discourse.paraview.org/t/no-proxy-that-matches-group-sources-and-proxy-were-found/17308/7 "2025-11-17T20:25:03Z")
Sorry for the late response. Yes I did. Here are my old settings.
[Paraview-config-saved.tar.gz](https://discourse.paraview.org/uploads/short-url/c2zFZw5Mhjsnnhp0jeIutAFkywn.gz) (23.6 KB)
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### Author:  [@cory.quammen](https://discourse.paraview.org/u/cory.quammen)
#### Post date: [December 3, 2025, 6:40pm UTC](https://discourse.paraview.org/t/no-proxy-that-matches-group-sources-and-proxy-were-found/17308/8 "2025-12-03T18:40:53Z")
Thank you, @deanwormer . I was able to reproduce your observed error by using the settings files you included here. The offending section of the `ParaView-Settings.json` file that led to the problem was
```json
"IOSettings" :
{
"ReaderDetails" :
[
"*.*",
"All files",
"*.*"
]
},
```
which you can get if you manually set these IO settings in the ParaView Settings:
Do you recall if you set that setting manually? Or did you do something else like save the default reader to use when you were presented with a few reader options to open the .nc file? Thanks!