Some files types like .bat cannot be attached to any form in the instanceSummarySome files types like .bat cannot be attached to any form in the instance even though the file extension is added to the glide.attachment.extensions system property. The files of type .bat are restricted and can't be attached to the forms. However, if the validation needs to be skipped and allow the .bat files, the system property: glide.security.file.mime_type.validation can be set to 'false'. This is a High security setting, so it is recommended to thoroughly test it in the sup-prod instances and then implement it in the production instance only if it is absolutely necessary to allow the files.Related LinksConfigure attachment system propertiesRestrict file extensions