NVIDIA GeForce Experience C++ Runtime Error can appear at any time, most often when updating but also when uninstalling. Here are some known steps to resolve the problem.
NVIDIA GeForce Experience C++ Runtime Error - Reboot
If there was a problem during installation, a reboot should clean up any temporary files and allow you to install the update.
NVIDIA GeForce Experience C++ Runtime Error - Update Drivers
Updating your drivers can also update Geforce Experience if you're using the Standard or Game-Ready Drivers. You can also try updating GeForce Experience only.