If you haven't expanded this section and set it to either 'Read & Write' or 'Read Only', then you will not be granted permission to expand the Zip file in question. Permission not granted on Zip file: Zip files on Mac have a section called 'Sharing & Permissions'.When you try to unzip or decompress a very large file, it could prove to be a difficulty because Archive Utility does not have the right resources to support the unzipping of very large files such as the one you may be trying to unzip. Complications from a very Large Zip File: This is another reason why you may encounter the archive utility Error 1.Take note here that you may see the file in your 'Download' folders but this does not mean that you can expand it. This only contributes to damaging your Zip file. Also, instability in a network connection may occur if you close your browser before the download is completed. Instability in Network Connection: If your network connection is unstable while you are trying to extract a Zip file, then this may just be a cause for error 1.
Several factors can be said to be the source of the archive utility error 1 which makes it impossible for you to expand your Zip file. Part 1: What Causes Archive Utility Error 1 Unable to Expand Zip File?