# Can't install Polars and DuckDB on windows 11

**URL:** <https://discourse.julialang.org/t/cant-install-polars-and-duckdb-on-windows-11/122688>\
**Category:** New to Julia\
**Tags:** package\
**Created:** [November 15, 2024, 4:35pm UTC](https://discourse.julialang.org/t/cant-install-polars-and-duckdb-on-windows-11/122688 "2024-11-15T16:35:59Z")\
**Posts on this page:** 1\
**Showing post:** 4

<div class="post-metadata">

**Author:** ![eldee](https://avatars.discourse-cdn.com/v4/letter/e/b5a626/32.png) [@eldee](https://discourse.julialang.org/u/eldee)\
**Post date:** [November 16, 2024, 1:54pm UTC](https://discourse.julialang.org/t/cant-install-polars-and-duckdb-on-windows-11/122688/4 "2024-11-16T13:54:27Z")

</div>

> [@pk1](#):
>
> But with `add Polars` I get the error I posted above.  
> When I tried the same on linux (WSL 2), I got the error
> 
> ```julia
> ERROR: The following package names could not be resolved:
> * Polars (not found in project, manifest or registry)
> Suggestions: Solaris Colors Polymers Pilates Poptart PolyChaos Monads Dolang Jolab Posets Folds Tonari Colab Losers Peaks
> 
> ```

On Windows 10 and Julia 1.11.1 at least I got the same error message as you got on WSL 2. Assuming you’re referring to

> **[GitHub - Pangoraw/Polars.jl: :bear: Julia wrapper around the polars library](https://github.com/Pangoraw/Polars.jl)**
>
> :bear: Julia wrapper around the polars library

the problem just [seems to be](https://github.com/Pangoraw/Polars.jl/issues/7) that this package is not registered. Luckily you can simply use

```julia
(@v1.11) pkg> add https://github.com/Pangoraw/Polars.jl

```

which works fine for me.

For DuckDB (v1.1) I got precompilation errors, both on Julia 1.10.4 and 1.11.1. This seems to be a known issue:

> [@Help Using DuckDB](https://discourse.julialang.org/t/help-using-duckdb/121401):
>
> I get an error when trying to use DuckDB. Is it my setup, something I might be doing wrong, or possibly a package issue? julia\> using DuckDB Precompiling DuckDB Info Given DuckDB was explicitly requested, output will be shown live ERROR: LoadError: could not load symbol “duckdb\_vector\_size”: Thank you for any help you might give a newbie hobbyist.

In this topic there are also some (links to) suggested workarounds. Using DuckDB v1.0 via

```julia-repl
(@v1.11) pkg> add DuckDB_jll@1.0 DuckDB@1.0

```

(first `rm` or `remove` v1.1 if it is installed), I did not run into any problems.

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