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When Win7 system uses excel, how to deal with the prompt "Trusted certificate has no digital signature"?
1. First, we need to open the program, click "Tools" at the top of the table, and a window will pop up to find "Macro".

2. After clicking the macro, you will see the "Security" setting. In the setting window that appears, we need to set its security, set its "security level" to the lowest, and click OK.

The above is the processing method of "trusted certificate without digital signature" when Win7 system uses excel, which can easily help users solve problems.