Can't install windows nvidia driver from AWS administered S3 Bucket: ec2-windows-nvidia-drivers

Question

Hi, 
We are trying to install the latest windows NVIDIA windows driver for our custom AMI. We are doing this via packer which is running a powershell script.
This is using the guidelines recommended [here](https://docs.aws.amazon.com/AWSEC2/latest/WindowsGuide/install-nvidia-driver.html) in option 4.
When the script runs on the ec2 instance, we're getting a 404. But when we check that url on our own machines, it's fine. The bucket in question is supposed to be publicly accessible, and I can download it from plenty of other machines.

Here's the log from packer:

```
Downloading https://ec2-windows-nvidia-drivers.s3.amazonaws.com/latest/537.13_grid_win10_win11_server2019_server2022_dch_64bit_international_aws_swl.exe latest/537.70_grid_win10_win11_server2019_server2022_dch_64bit_international_aws_swl.exe to C:\Users\Administrator\Downloads\NVIDIA\installer.exe

Directory: C:\Users\Administrator\Downloads

Mode                LastWriteTime         Length Name
----                -------------         ------ ----
 d-----        11/1/2023  11:47 AM                NVIDIA
Exception calling "DownloadFile" with "2" argument(s): "The remote server returned an error: (404) Not Found."
```

This is the code:

```powershell
$ErrorActionPreference = "Stop"
$ProgressPreference = 'SilentlyContinue'

Write-Output "Beginning Nvidia driver installation"
$wc = New-Object net.webclient

$Bucket = "ec2-windows-nvidia-drivers"
$KeyPrefix = "latest"
$LocalDirectory = "$home\Downloads\NVIDIA"
$LocalInstallerPath = "$LocalDirectory\installer.exe"

$Objects = aws s3api list-objects --bucket $Bucket --prefix $KeyPrefix --no-sign --output json | ConvertFrom-Json
$InstallerExeKey = ($Objects.Contents | Where-Object { $_.Key -like "*.exe" }).Key
$InstallerUrl = "https://$Bucket.s3.amazonaws.com/$InstallerExeKey"

Write-Output "Downloading $InstallerUrl to $LocalInstallerPath"

New-Item -ItemType Directory -Path "$LocalDirectory" -Force
$wc.DownloadFile("$InstallerUrl", "$LocalInstallerPath")
```

Any idea what the issue might be?

We've made sure our Iam role has s3 access, etc (even though we're downloading via http).

Accepted Answer

Looks like the script above does not support multiple "latest" entries being returned. As logged, the identified url to download is actually two urls: 
```
https://ec2-windows-nvidia-drivers.s3.amazonaws.com/latest/537.13_grid_win10_win11_server2019_server2022_dch_64bit_international_aws_swl.exe
```

```
latest/537.70_grid_win10_win11_server2019_server2022_dch_64bit_international_aws_swl.exe
```

The fix is to use something like

```
$InstallerExeKey = ($Objects.Contents | Where-Object { $_.Key -like "*.exe" } | Sort-Object -Property LastModified -Descending | Select-Object -First 1).Key
```

to select only the most recent driver URL.

Can't install windows nvidia driver from AWS administered S3 Bucket: ec2-windows-nvidia-drivers

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