I moved my AppData folder to my second drive to save space, and the system icons on my taskbar, including the system menu and networking menu, won't work anymore. I can't right click on applications on the taskbar either.
I have a tiny SSD containing my windows installation, user, etc. The drive is only 118 gigabytes, and my AppData folder alone was 34.1 gigabytes. I obviously had to move it for my system to have space. I created a separate account with admin privileges, moved it to my second, much larger drive, and made a junction using the command prompt. Now, the system icons on my taskbar don't work. I could just move the folder back, but then I would run out of space almost immediately.
(More detailed process of what I did)
I made a secondary account with admin privileges on my main account. I copied the whole AppData folder, including the Local, LocalLow, and Roaming folders, to D:\AppData. I then made a junction using the following command:
mklink /j "C:\Users\(my username)\AppData" "D:\AppData"
I then restarted my computer.