Printing Data Driven Pages returns the following error,
Error: "Unexpected error occurred while printing".
A possible cause for this error is that the output size of the temporary metafile is insufficient to print the Data Driven Pages. The value of the temporary metafile can be modified depending on the size of the Data Driven Pages.
Note: A metafile is a Microsoft Windows image file format, which contains information describing or specifying another file. This information can contain both vector graphics and bitmap components. The following Microsoft document provides a more detailed description of metafiles: Metafile class.
Note: If ArcMap is running, restart ArcMap for the changes to take effect.
Note: Smaller temporary metafile sizes can alleviate low memory errors experienced when printing or exporting in ArcGIS.
Note: When printing Data Driven Pages, it is recommended to export the Data Driven Pages to PDF format before printing. The following ArcGIS for Desktop document, describes how to do this in detail: Exporting Data Driven Pages.Export Data Driven Pages to ArcGIS Pro for printing