I've created a spreadsheet that contains hundreds of hyperlinks that lead to images located on a shared, online server used by both Windows and Mac computers. After inputting the hyperlinks, they work for a day or two, but eventually the links seem to 'expire'. I'll be connected to the server, click on a hyperlink and a warning appears saying "Hyperlinks can be harmful to your computer". I then click 'open', and another pop-up appears saying "Cannot open specified file" - this happens with every single hyperlink.
I've searched high and low for an answer, but haven't found anything that works aside from me manually having to input the hyperlinks every time I open the spreadsheet (which is not very time efficient). Any advice would be greatly appreciated!