Use lowercase letters

Use this policy setting to configure the use of lowercase letters in the Microsoft Passport for work PIN.If you configure this policy setting to “Allow” Microsoft Passport for Work allows users to use lowercase letters in their work PIN.If you configure this policy setting to “Disallow” Microsoft Passport for Work prevents users from using lowercase letters in their work PIN.If you configure this policy setting to “Required” Microsoft Passport for Work requires users to include at least one lowercase letter in their work PIN.If you disable or do not configure this policy setting Microsoft Passport for Work allows users to use lowercase letters in their work PIN.