# Problem with read\_raw\_fif - numpy.dtype\[float64\]

**URL:** <https://mne.discourse.group/t/problem-with-read-raw-fif-numpy-dtype-float64/3431>\
**Category:** Support & Discussions\
**Tags:** meg\
**Created:** [July 20, 2021, 12:26pm UTC](https://mne.discourse.group/t/problem-with-read-raw-fif-numpy-dtype-float64/3431 "2021-07-20T12:26:21Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![TYH](https://avatars.discourse-cdn.com/v4/letter/t/da6949/32.png) [@TYH](https://mne.discourse.group/u/TYH)\
**Post date:** [July 20, 2021, 12:26pm UTC](https://mne.discourse.group/t/problem-with-read-raw-fif-numpy-dtype-float64/3431/1 "2021-07-20T12:26:21Z")

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- MNE-Python version: 0.23.0
- operating system: window 7

I downloaded sample MEG data from MNE website. I tried to load raw fif file. But, it showed error message as below:

 ![Picture2](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/fe3ce83bd16e3f1b6b3c019647e337698ecfb2a5.jpeg)

I also tried with MNE-Python version: 0.22.1. There was no problem at all.

How can I fix it under v0.23? Any help would be greatly appreciated.

Thanks!

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**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:** [July 20, 2021, 12:32pm UTC](https://mne.discourse.group/t/problem-with-read-raw-fif-numpy-dtype-float64/3431/2 "2021-07-20T12:32:57Z")

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Hello, sorry to hear you’re having problems. I assume there is some incompatibility with / between some of the numeric and scientific Python packages you have installed.

Please follow the [official installation instructions](https://mne.tools/stable/install/index.html) to create a fresh, clean `conda` environment to run MNE from.

I have to add that I’m not sure that we even still support Windows 7 … it’s ancient and officially has reached its end-of-life.

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**Author:** ![TYH](https://avatars.discourse-cdn.com/v4/letter/t/da6949/32.png) [@TYH](https://mne.discourse.group/u/TYH)\
**Post date:** [July 21, 2021, 6:52am UTC](https://mne.discourse.group/t/problem-with-read-raw-fif-numpy-dtype-float64/3431/3 "2021-07-21T06:52:59Z")

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Thanks Richard for speedy reply. I tried what you said. It appears it’s time to switch to Linux. I will keep trying and providing feedback. Great thanks.

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**Author:** ![TYH](https://avatars.discourse-cdn.com/v4/letter/t/da6949/32.png) [@TYH](https://mne.discourse.group/u/TYH)\
**Post date:** [July 22, 2021, 6:57am UTC](https://mne.discourse.group/t/problem-with-read-raw-fif-numpy-dtype-float64/3431/4 "2021-07-22T06:57:18Z")

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Hi Richard,

A quick feedback. On the window computer, I followed the official installation instructions and created mne environment. It still works on the ancient os!!! But, I still switch to Linux for good. Thanks for your help.