If you use Avast antivirus software and have been facing error RPC on the same, you can refer to the following solutions to fix the error:
 Step 1: You would have to repair the Windows registry
 Step 2: Perform a malware and virus scan on the system
 Step 3: You will have to clean all the junk files
 Step 4: You can also update the device drivers
 Step 5: Undo all the changes you recently applied to the system
 Step 6: Reinstall the program and see if the issue persists
 Step 7: Use Windows system file checker
 Step 8: Install all the recent Windows updates
 Step 9: Perform a clean installation of the software
These steps will surely fix the error. But if you still face any problem, you can freely call avast tech support number to get assistance from the experts.

Read more: avast support