Case:
A customer responding to a certain Excel file in the U disk cannot be opened.
Solution:
After testing, it is found that the user’s EXCEL file header is damaged, and it can be opened after repairing (with a password), but after entering the password, it still prompts “the file is in an invalid format”. There is an EXCEL repair program just written by a friend, which is repaired by software. Most of the data are normal, and the data recovery is successful.