This is a minor, perhaps even trivial, problem. I have long had a button on my Windows 10 taskbar to open Zotero. This disappeared yesterday, and when I tried to put it back, I get the appropriate link to Zotero, but without the Zotero icon. Do you have any suggestions about correcting this?
Sorry, that's not something we can help with. zotero.exe is just a standard executable with an icon. Adding it to the taskbar would be the same as with any other program, and any problems with the standard approach would be problems in Windows.
In case others experience this problem, let me say what fixed it for me. I shut down Windows 10, then restarted it. I have no idea why this worked, but it did.
Thanks very much.