Thank you sir for your kind suggestions. I deleted the .cfx files but the error remains same also I don't have the files named libcrypto-1_1-x64.dll. I am using student version. 
Ansys Assistant will be unavailable on the Learning Forum starting January 30. An upgraded version is coming soon. We apologize for any inconvenience and appreciate your patience. Stay tuned for updates.
You are navigating away from the AIS Discovery experience