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This error is usually related to Azure's conditional access policies or accounts that require multi-factor authentication (MFA). Please check the following factors first:
Check if an MFA is required: If your account requires an MFA, try logging in through the Azure CLI or Azure portal, as PowerShell may not support interactive MFA prompts.
Log in with a tenant ID: Use the .az login --tenant TENANT_ID command, where TENANT_ID is your actual tenant ID.
Check the Azure PowerShell version: Make sure your Azure PowerShell is up to date. Older versions may not support some authentication methods or features.
Clear cache: Try to log out of all sessions and delete Azure PowerShell cache files.
Check account permissions: Make sure your account has access to target tenants and subscriptions.
Using Azure Portal: Try logging in through Azure Portal to rule out PowerShell related issues.