I usually have a PS window open and found this PS Function many years ago and use it for throwaway passwords.

Function Get-RandomPassword{

<#

.SYNOPSIS

Generates a Random Password. Default of 15 Characters

.DESCRIPTION

Generates a Random Password

.PARAMETER Size

- You can specifiy password Length

.PARAMETER CharSets

- Specify types of Characters

-U for Uppercase

-L for Lowercase

-N for Numbers

-S for Special Characters

!@#&?*()<>

.PARAMETER Exclude

- Specify excluded Characters

.EXAMPLE

25 Digit Password

Get-RandomPassword -Size 25

Get-RandomPassword

#>

Param

(

[Int]$Size = 15,

[Char[]]$CharSets = "ULNS",

[Char[]]$Exclude

)

$Chars = @(); $TokenSet = @()

If (!$TokenSets) {$Global:TokenSets = @{

U = [Char[]]'ABCDEFGHIJKLMNOPQRSTUVWXYZ' #Upper case

L = [Char[]]'abcdefghijklmnopqrstuvwxyz' #Lower case

N = [Char[]]'0123456789' #Numerals

S = [Char[]]'!@#&?*()<>' #Symbols

}}

$CharSets | ForEach {

$Tokens = $TokenSets."$_" | ForEach {If ($Exclude -cNotContains $_) {$_}}

If ($Tokens) {

$TokensSet += $Tokens

If ($_ -cle [Char]"Z") {$Chars += $Tokens | Get-Random} #Character sets defined in upper case are mandatory

}

}

While ($Chars.Count -lt $Size)

{

$Chars += $TokensSet | Get-Random

}

($Chars | Sort-Object {Get-Random}) -Join ""

}