Thunderbird 102.6.1 (64-bit) icon on the Windows task bar is just a document folder

[SolderMaster13]

The Thunderbird 102.6.1 (64-bit) icon on the Windows task bar is just a document empty folder,instead of the BLUE Thunderbird icon on the desktop. When I place a copy of the Thunderbird icon on the Windows 10 taskbar at the bottom of my screen, it turn into a empty document icon?? This started happening several version ago. It assets Thunderbird but it appears strange and unprofessional, please fix it.

[SolderMaster13 · Accepted solution]

The solution to this problem is to first save all your mail filters and calendar entries. Then DELETE and REMOVE all of Thunderbird files from your computer. Then reinstall thunderbird latest version and replace all your mail accounts, filters, and calendar entries via the import tool. It works but it takes a lot of work and time.