# Humann installation error

**URL:** <https://forum.biobakery.org/t/humann-installation-error/6614>\
**Category:** MetaPhlAn\
**Created:** [February 8, 2024, 1:18am UTC](https://forum.biobakery.org/t/humann-installation-error/6614 "2024-02-08T01:18:22Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Sithara\_Udeshi](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.biobakery.org/sithara_udeshi/32/2714_2.png) [@Sithara\_Udeshi](https://forum.biobakery.org/u/Sithara_Udeshi)\
**Post date:** [February 8, 2024, 1:18am UTC](https://forum.biobakery.org/t/humann-installation-error/6614/1 "2024-02-08T01:18:22Z")

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I’m trying to install Humann, and facing this trouble, Could you please help to solve this?  
C:\Users\udesh\>conda install -c bioconda metaphlan  
Channels:

- bioconda
- defaults
- conda-forge
- leukocare  
Platform: win-64  
Collecting package metadata (repodata.json): done  
Solving environment: failed

LibMambaUnsatisfiableError: Encountered problems while solving:

- nothing provides bowtie2 \>=2.0.0 needed by metaphlan-2.8.1-py\_0

Could not solve for environment specs  
The following packages are incompatible  
└─ metaphlan is not installable because there are no viable options  
├─ metaphlan [2.8.1|3.0] would require  
│ └─ bowtie2 \>=2.0.0 , which does not exist (perhaps a missing channel);  
└─ metaphlan [3.0|3.0.0.alpha|…|4.0.6] would require  
└─ bowtie2 \>=2.3.0 , which does not exist (perhaps a missing channel).

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**Author:** ![aitor.blancomiguez](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.biobakery.org/aitor.blancomiguez/32/86_2.png) [@aitor.blancomiguez](https://forum.biobakery.org/u/aitor.blancomiguez)\
**Post date:** [March 5, 2024, 11:47am UTC](https://forum.biobakery.org/t/humann-installation-error/6614/2 "2024-03-05T11:47:12Z")

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Hi @Sithara_Udeshi  
Please, move the post to the humann subforum to better adress your problem