Setting Calculation always goes back to Manual. How to permanentlyhave Task Panel dismissed?

[AA Arens]

Two issues.

Since shortly, the setting in Options -> Calculation -> Calculation is
always set to Manual, even after I have set it to Automatic and saved
the document. After restart Excel is it set back to Manual. Irky.

some documents, the task panel is always active after I open the
document. Hoew to have it permanently closed? It happen in some
documents.

Bart