The 5,156,69 error that you are experiencing is caused when security software installed on your computer is blocking the incoming data from your scanner. Please temporarily disable the software or contact that software's support for assistance with allowing the MG3620's scanner through their software. Examples of such software are Webroot, Norton, TotalAV and McAfee.
It's possible and it also could be a Windows built in security/firewall setting. If disabling Ad block does not reslove the issue, please contact Microsoft support. They will troubleshoot the computer itself to narrow down what is causing the communication issue to the scanner.
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