# fsaverage certificate\_verify\_failed error

**URL:** <https://mne.discourse.group/t/fsaverage-certificate-verify-failed-error/3844>\
**Category:** Support & Discussions\
**Tags:** installation\
**Created:** [October 21, 2021, 11:48am UTC](https://mne.discourse.group/t/fsaverage-certificate-verify-failed-error/3844 "2021-10-21T11:48:21Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![dsrishyla](https://avatars.discourse-cdn.com/v4/letter/d/3e96dc/32.png) [@dsrishyla](https://mne.discourse.group/u/dsrishyla)\
**Post date:** [October 21, 2021, 11:48am UTC](https://mne.discourse.group/t/fsaverage-certificate-verify-failed-error/3844/1 "2021-10-21T11:48:21Z")

</div>

- MNE-Python version: 3.8.8
- operating system: Windows 10

I am trying to create a source space, to calculate a forward model for a subject without an MRI. This requires that I use fsaverage. However, there seems to be a problem downloading the fsaverage files. The code is below, any pointers to how I could resolve this?

```python
import mne
from mne.datasets import fetch_fsaverage
mne.datasets.fetch_fsaverage(subjects_dir=None,verbose=None)

```

(produces this error)  
`URLError: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate has expired (_ssl.c:1125)>`

Thank you for your time!

---

<div class="post-metadata">

**Author:** ![richard](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/richard/32/15_2.png) [@richard](https://mne.discourse.group/u/richard)\
**Post date:** [October 21, 2021, 7:32pm UTC](https://mne.discourse.group/t/fsaverage-certificate-verify-failed-error/3844/2 "2021-10-21T19:32:15Z")

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Hello @dsrishyla and welcome to the forum!

How did you install MNE-Python? The error message you’re seeing typically indicates that the `certifi` package is outdated.

Best wishes,  
Richard

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<div class="post-metadata">

**Author:** ![dsrishyla](https://avatars.discourse-cdn.com/v4/letter/d/3e96dc/32.png) [@dsrishyla](https://mne.discourse.group/u/dsrishyla)\
**Post date:** [October 21, 2021, 8:10pm UTC](https://mne.discourse.group/t/fsaverage-certificate-verify-failed-error/3844/3 "2021-10-21T20:10:19Z")

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I am running python on jupyter notebook. I used the following command to install mne;  
`pip install mne`

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<div class="post-metadata">

**Author:** ![richard](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/richard/32/15_2.png) [@richard](https://mne.discourse.group/u/richard)\
**Post date:** [October 21, 2021, 9:15pm UTC](https://mne.discourse.group/t/fsaverage-certificate-verify-failed-error/3844/4 "2021-10-21T21:15:16Z")

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I suggest you follow our [official installation instructions](https://mne.tools/stable/install/index.html)  
This is your best bet to ensure everything will just work.

In an attempt to get your download to work on your existing installation, you could try running `pip install -U certifi`  
If that doesn’t fix the issue, all I can suggest is to follow the installation docs linked to above.

Best wishes,  
Richard

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<div class="post-metadata">

**Author:** ![dsrishyla](https://avatars.discourse-cdn.com/v4/letter/d/3e96dc/32.png) [@dsrishyla](https://mne.discourse.group/u/dsrishyla)\
**Post date:** [October 22, 2021, 12:52pm UTC](https://mne.discourse.group/t/fsaverage-certificate-verify-failed-error/3844/5 "2021-10-22T12:52:09Z")

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I will try this - thank you for your assistance, Richard!

-Diksha