K.exe has stopped working when starting Appian 17.1

This is a local installation on Windows 7 64 bit, have been using it to practice from quite a while, my permanent license is valid till Oct 2020, I did a gracefull shutdown, but when I tried to start the environment now it shows k.exe has stopped working. I have gracefully shutdown the engines and checked for failed or undeployed files, found none. No k.exe process running after the shutdown. I guess the error comes up when the Analytics 002 process is starting. Analytics 002 is in replica mode for very long.

Please help!

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