Why does the icon of a file with the xlsx extension change?

Question

excel

Files with xlsx extension on the desktop are displayed with the wrong icon (white sheet), while other files with excel extensions are displayed with a standard icon. The files themselves open and work correctly. When you open the "open with" file, the icon changes immediately to the correct one, but after a reboot, everything is wrong again.

Answer 1

Look at the registry branch HKEY_CLASSES_ROOT
There is information about each extension, you need .xlsx
Inside it is written the name of the section that you need to look for in the same branch, for example Excel.Sheet.12 , and already in it the DefaultIcon subsection with the value of the path to the icon or resource exe / dll

Answer 2

Look at the registry branch HKEY_CLASSES_ROOT
There is information about each extension, you need .xlsx
Inside it is written the name of the section that you need to look for in the same branch, for example Excel.Sheet.12, and already in it the DefaultIcon subsection with the value of the path to the icon or resource exe / dll

Went through the thread. The file is available. I did a complete replacement of the destination folder (I took it from a computer on which everything is fine).