Hi Johnny,
I understand that it must be frustrating, but rest assured, we are here to help fix the issue and guide you in the right direction.
To help you suggest steps to resolve the issue, I would appreciate if you could answer the following questions:
1. Is the issue specific with office files?
2. When was the last time the files appeared on the taskbar?
3. Do you have any anti-virus program installed on the computer?
4. Are you aware of any recent software or hardware changes on the computer?
You can pin items to the Excel Jump List by dragging the file and dropping it on the Excel Taskbar icon.
You may rebuild the jump list and check if it helps.
- Open Windows Explorer.
- Type or copy and paste the following into the address bar:
%AppData%\Microsoft\Windows\Recent\AutomaticDestinations
- Identify files that are comparatively larger in size than the rest of the file, such as files that have file size of 1 MB or more.
Delete the abnormal file.
Tip: If you do not want to retain the Jump Lists’ recent items history on all applications, just delete all the automatic Destinations-ms files in the folder.
- The recent items functionality on Jump Lists will be restored. The recent items on the Jump Lists will be re-added as the program is been used. However, do note that the solution does not restore the previously pinned items. So user will have to pin new items again.
Hope this helps and do let us know if you need further assistance. We will be glad to help.