# Installing CMake on Windows 10

**URL:** https://discourse.cmake.org/t/installing-cmake-on-windows-10/5358
**Category:** Usage
**Created:** [April 2, 2022, 1:55pm UTC](https://discourse.cmake.org/t/installing-cmake-on-windows-10/5358 "2022-04-02T13:55:59Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Philip\_Tilson](https://discourse.cmake.org/letter_avatar_proxy/v4/letter/p/8baadc/32.png) [@Philip\_Tilson](https://discourse.cmake.org/u/Philip_Tilson)
#### Post date: [April 2, 2022, 1:55pm UTC](https://discourse.cmake.org/t/installing-cmake-on-windows-10/5358/1 "2022-04-02T13:55:59Z")

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Hi -

As a brand new user to the RasPi Pico module, I am attempting to install the various packages required for Windows 10, one of which is CMake.

However, every time I try to install, whether from a .msi or from the .zip source, I get a long pause followed by an error message: “The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2755”.

I get the same error whether I try to install the latest release or the previous one. And I can’t find any reference to an error code 2755!

Any ideas, please?

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### Author: ![ben.boeckel](https://discourse.cmake.org/letter_avatar_proxy/v4/letter/b/ea5d25/32.png) [@ben.boeckel](https://discourse.cmake.org/u/ben.boeckel)
#### Post date: [April 4, 2022, 1:22am UTC](https://discourse.cmake.org/t/installing-cmake-on-windows-10/5358/2 "2022-04-04T01:22:07Z")

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This may be an anti-virus thing.

Cc: @brad.king