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Go to the settings of your antivirus software and try to exclude Excel along with all the add-ins you want to use. In this case, consider which add-in is more important. However, these add-ins often conflict with add-ins from other vendors.
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Some antivirus software includes add-ins that are installed in Excel to provide additional security features. If that solves the problem, it usually means that your antivirus software was the culprit. Even if you can’t find anything in the log, you should try to start Excel with the antivirus software deactivated. Check the scan log of your antivirus software to see whether it blocked Excel or an add-in. In many cases, a warning message is not even displayed.
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Some antivirus software does not recognize macros or add-ins correctly and blocks them. Third-party antivirus software can conflict with Office applications, causing Excel to freeze, fail to start, or stop responding after startup.
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