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Malwarebytes AntiExploit blocks MS Excel

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We noticed on 4\15\2020 that the Malwarebytes Anti-Exploit blocked MS Excel file from being open for a few of our customers. One customer reported that he tried to open up a MS Excel attachment from within MS Outlook, and was not able to do so since a pop up occurred stating Anti Exploit blocked the file from being opened.

Malwarebytes Anti Exploit version on 4\15\2020.


I have log files that can be analyzed. 

Thank You



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The alerts that you saw are one-time alerts from a known, unresolved bug. The blocks stop automatically once the upgrade process completes. We released a new version of MBAE which we is why you saw these blocks when your older version upgraded to this.

This is a known issue that we are taking a look at, but unfortunately, it is not reproducible, happens only on few machines and then goes away once the upgrade is done - all in all making it very difficult for us to debug internally. Hence the delay in fixing it.

I will keep you posted on its resolution.

Thanks for reporting and apologize for the inconvenience caused.

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