Hi @ak70 @Just-Lisa-Now- - 

You are not facing a malware issue. This update is not mandatory at the moment, but if you run into any download or program issues, updating the Visual C++ redistributable package (also known as VC++ redist) to the latest version is important to ensure that your system has the necessary components to run ProSeries. View the article here:  Instructions to install VC++ Redistributables. 

Reply back if you have any questions and I'll do my best to point you in the right direction.  

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