Goal: Upload a file to Azure Blob Storage and set MD5 that can be validated when a user downloads the file.

Using Azure CLI Powershell.

```
Get-FileHash -Algorithm MD5 .\AutoSetup.zip
Algorithm       Hash                                             Path
---------       ----                                             ----
MD5             693EF0DB938308AC2C362F50F7CB9F9F                 C:\MyFiles\AutoSetup.zip

az storage blob upload --account-name mystorageaccount --container-name mycontainername --file AutoSetup.zip --name Autosetup2.zip --content-md5 693EF0DB938308AC2C362F50F7CB9F9F
Finished[#############################################################]  100.0000%
The MD5 value specified in the request is invalid. MD5 value must be 128 bits and base64 encoded. ErrorCode: InvalidMd5
<?xml version="1.0" encoding="utf-8"?><Error><Code>InvalidMd5</Code><Message>The MD5 value specified in the request is invalid. MD5 value must be 128 bits and base64 encoded.
RequestId:9f27334a-801e-0028-6db4-3539c5000000
Time:2020-05-29T12:28:23.7677258Z</Message></Error>

```

**Edit 1:**

I've also attempted getting the hash this way

```
$someFilePath = "C:\MyFiles\AutoSetup.zip"
$md5 = New-Object -TypeName System.Security.Cryptography.MD5CryptoServiceProvider
$hash = [System.BitConverter]::ToString($md5.ComputeHash([System.IO.File]::ReadAllBytes($someFilePath)))
Write-Host $hash
69-3E-F0-DB-93-83-08-AC-2C-36-2F-50-F7-CB-9F-9F

```

It seems that no matter what I do, the MD5 that is returned for the file is `693EF0DB938308AC2C362F50F7CB9F9F` but Azure won't take it...

**Edit 2:**

I've generated a random 128-bit string `$B&E)H@McQfTjWnZ` and proceeded to encode it in Base64 which gave me `JEImRSlIQE1jUWZUalduWg==` When I attempt to upload a blob with THAT hash, I get a different error message: 

```
The MD5 value specified in the request did not match with the MD5 value calculated by the server. ErrorCode: Md5Mismatch

```

The above makes sense, cause I just created a random 128 bit base64 encoded hash. However, now I am wondering why the Powershell's `Get-FileHash` command gives me what seems to be incorrect?

What can be causing the error?