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"PKCS12 (PFX) without a supplied password has exceeded maximum allowed iterations" error in fiscal integration

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This article provides a solution for an error that occurs in a fiscal integration process in Microsoft Dynamics 365 Commerce.

Symptoms

In a fiscal registration process, when you try to submit a fiscal document, you receive the following error message:

PKCS12 (PFX) without a supplied password has exceeded maximum allowed iterations. See https://go.microsoft.com/fwlink/?linkid=2233907 (Opens in new window or tab) for more information.

Resolution

Prerequisites

Before exploring the issue, you should know which type of certificates is supported in your scenario.

  • If POS is running in offline mode, only local certificates are supported.
  • For Commerce Scale Unit (CSU) (cloud), only certificates from Azure Key Vault are supported.
  • For self-hosted CSU, certificates from both Azure Key Vault and local storage are supported.

Export a PFX certificate without a password

If certificates from Azure Key Vault are used for digital signing, the certificates uploaded to Azure Key Vault should contain the private key and not have a password.

If you export the certificate using Certificate Export Wizard, a personal information exchange (PFX) certificate format should be selected and you'll be prompted to enter a password. However, certificates with passwords aren't supported for digital signing in Microsoft Dynamics 365 Commerce. Run the following script to remove the password from a PFX certificate:

$pfxFilePath = '<Localpath of the pfx certificate>'
$pwd = '<Password of the pfx certificate>'
$collection = New-Object System.Security.Cryptography.X509Certificates.X509Certificate2Collection
$collection.Import($pfxFilePath, $pwd, [System.Security.Cryptography.X509Certificates.X509KeyStorageFlags]::Exportable)
$pkcs12ContentType = [System.Security.Cryptography.X509Certificates.X509ContentType]::Pkcs12
$certBytes = $collection.Export($pkcs12ContentType)
[System.IO.File]::WriteAllBytes($pfxFilePath, $certBytes)

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