How to Reinstall Signature Certificate

1.Right-click 「WPS Office」and select 「Open File Location」.

2. Double-click to open the folder which named 「corresponding version number」, then double-click the 「office6」 folder.

3. Locate the startup program for the corresponding component (the startup program for the SpreadSheet is et.exe, for the Presentation it’s wpp.exe, for the writer it's wps.exe, and for the PDF it's pdf.exe). Right-click on it and select 「Properties」. The following figure uses the table component as an example.

4. Click the 「Digital Signature” option」， if the signature cannot be found, it indicates that your computer is severely infected with malware. Please use an antivirus tool to clean it immediately.

5.Confirm the Signature exists. If it does, reinstall these two certificates in the order shown in the figure below.