# Installer integrity check fail

Hello, i uploaded the picture for the error, pretty much the installer doesnt work and an error message saying installer integrity check fail comes out(NSIS error), i tried downloading both the stable release and the preview one but neither work, someone else had this problem or its probably a problem of my pc?

Thanks a lot for the attention

### Verifying checksum

Windows installer is expected to have its checksum (SHA512) be:

1c71bf558ebdb37e39dcdbb6109f7ec1787feb7c463880025c9835345ba6672775fa1e879e1f4e8319711fd497741e82179cd8e7572b0341de34f0103a02b09c


To compute the checksum associated with the file you locally downloaded, here are the steps:

1. Start power shell

2. Adapt and run the following command:

Get-Filehash -path c:\path\to\Downloads\Slicer-5.2.1-win-amd64.exe -algorithm SHA512 | fl


### Looking up expected checksum

Waiting we improve the download site to explicitly list the checksum, you may be able to identify the checksum of specific packages going to https://slicer-packages.kitware.com.

For example, here is how to identify the checksum for Slicer-5.2.1-win-amd64.exe

1. Display item infos

Hello,