Retrospect 13 - error -530 (backup client not found) in Retrospect 9 or higher for Macintosh Posted July 8, 2016 · Report reply hgv, like many new posters to these forums, you may not be aware that there is a search facility for the forums. If you look at the very top of the page, on the line where the Retrospect box logo and the "Retrospect" name appear on the left, there is a magnifying-glass icon on the right. Immediately to the left of that magnifying-glass, there is a search box. On some browsers that search box appears in a shade of black, so that it is tough to see. Anyway, if you type an error code such as "530" (no quotes) into the search box and then click the magnifying-glass icon, you will get a pop-up with a list of thread titles—or threads with an applicable post—where that error code appears. Because the search facility has not been specially adapted for the Retrospect forums, if you type in the error code as "-530" (no quotes) you will not get any results. To get results without removing the minus sign from the error code, you must type the error code as "-530" (with surrounding quotes). By default, that pop-up list is sorted in order of what the search facility considers to be relevance—which may not be what you consider to be relevance. However the pop-up list has a drop-down, just to the left of the close-box 'X', that lets you change the order to most-recent-first date—which you are likely to find to be more useful.