This appears to be related to the increasingly strict ways that Windows Defender and other anti-virus programs manage program access, especially for specialized programs such as NSolV8. One user sent in the following instructions to manage via Windows: Select Start > Settings > Update & Security > Windows Security > Virus & threat protection. Under Virus & threat protection settings, select Manage settings. Under Controlled folder access, select Manage Controlled folder access. From there I selected Allow An App Through Controlled Folder Access then Add An Allowed App and browsed for the NSOL8.exe. There are similar procedures for other anti-virus programs.