Task Scheduler with ps1 script outputs empty file - powershell

Question

Running a ps1 independently works fine, however when I schedule via Task Scheduler, the task runs and outputs a 0 byte csv file.
I believe I have the scheduled task setup correctly, no quotes in Start In - program is set to powershell.exe, arguments are set to -execution policy bypass -file "C:\Temp\file.ps1"
Connect-AzureAD -Credential $MyCredential -Tenant ##########################
$dteshort = (get-date).ToString("MM-dd-yyyy")
$objectIDs = Get-AzureADGroupMember -ObjectId ######### | Select-Object objectid,displayname,mail
$groups = foreach ($objectID in $objectids) {
$user = Get-AzureADUser -ObjectId $objectid.ObjectId
Get-AzureADUserMembership -ObjectId $objectID.ObjectId | Where-Object { $_.displayname -like '*PartOfGroupName*' } |
Select-Object #{Name = 'email'; Expression = {$user.mail}}, displayname
}
#
$groups | Export-Csv -Path "D:\LocalPathToFileExport\PBI\PBI_Licenses_AsOf_$dteshort.csv" -NoTypeInformation
After adding start/stop transcript
ConvertTo-SecureString : Key not valid for use in specified state.
At C:\PSScripts\PowerBI HR Partner.ps1:5 char:143
+ ... et-Content $secUser), (Get-Content $SecFile | ConvertTo-SecureString)
+ ~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (:) [ConvertTo-SecureString], CryptographicException
+ FullyQualifiedErrorId :
ImportSecureString_InvalidArgument_CryptographicError,Microsoft.PowerShell.Commands.ConvertToSecureStringCommand
ConvertTo-SecureString : Key not valid for use in specified state.
At C:\PSScripts\PowerBI HR Partner.ps1:5 char:143
+ ... et-Content $secUser), (Get-Content $SecFile | ConvertTo-SecureString)
+ ~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (:) [ConvertTo-SecureString], CryptographicExcepti
on
+ FullyQualifiedErrorId : ImportSecureString_InvalidArgument_CryptographicError,Microsoft.Pow
erShell.Commands.ConvertToSecureStringCommand
I thought this would work for authenticating to Azure AD, it does when ran manually. The password is exported from Get-Credential / ConvertFrom-SecureString and saved in password.txt
$SecFile = "C:\AzureAD\Password.txt"
$SecUser = "C:\AzureAD\UserName.txt"
$MyCredential = New-Object -TypeName System.Management.Automation.PSCredential -ArgumentList (Get-Content $secUser), (Get-Content $SecFile | ConvertTo-SecureString)
Connect-AzureAD -Credential $MyCredential -Tenant ########
After messing around with this, the ConvertTo-SecureString wasn't working as I expected and had to go another route to authenticate to Azure.
It's working now, thanks all for the help diagnosing this.