# Import annadata failed: Intel oneMKL FATAL ERROR: Cannot load mkl\_intel\_thread.2.dll

**URL:** <https://discourse.scverse.org/t/import-annadata-failed-intel-onemkl-fatal-error-cannot-load-mkl-intel-thread-2-dll/3513>\
**Category:** Help\
**Created:** [February 26, 2025, 9:35am UTC](https://discourse.scverse.org/t/import-annadata-failed-intel-onemkl-fatal-error-cannot-load-mkl-intel-thread-2-dll/3513 "2025-02-26T09:35:38Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![rmd13](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.scverse.org/rmd13/32/1322_2.png) [@rmd13](https://discourse.scverse.org/u/rmd13)\
**Post date:** [February 26, 2025, 9:35am UTC](https://discourse.scverse.org/t/import-annadata-failed-intel-onemkl-fatal-error-cannot-load-mkl-intel-thread-2-dll/3513/1 "2025-02-26T09:35:38Z")

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I installed annadata into Anaconda3 on Win8.1

```auto
    D:\GreenSoft\Anaconda3\Scripts\activate.bat D:\GreenSoft\Anaconda3
    conda create --name annadata
    conda activate annadata
    conda install anndata -c conda-forge
    

```

After it is installed, I open the annadata using:

```auto
    call D:\GreenSoft\Anaconda3\Scripts\activate.bat D:\GreenSoft\Anaconda3
    call conda activate annadata
    python
    

```

```auto
Python 3.13.2 | packaged by conda-forge | (main, Feb 17 2025, 13:52:56) [MSC v.1
942 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
warning: can't use pyrepl: Windows 10 TH2 or later required

```

`>>> import anndata`  
`Intel oneMKL FATAL ERROR: Cannot load mkl_intel_thread.2.dll. `

Is there something I did wrong in installation? Os annadata cannot run in Win8.1?  
Should I need to change to a earlier python version to install annadata?

Thanks.

---

<div class="post-metadata">

**Author:** ![rmd13](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.scverse.org/rmd13/32/1322_2.png) [@rmd13](https://discourse.scverse.org/u/rmd13)\
**Post date:** [February 26, 2025, 9:51am UTC](https://discourse.scverse.org/t/import-annadata-failed-intel-onemkl-fatal-error-cannot-load-mkl-intel-thread-2-dll/3513/2 "2025-02-26T09:51:18Z")

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conda create --name annadata python=3.8  
solved the problem.