I am trying to upgrade my ArcGIS 10.8 to 10.8.1. Once the installation starts the error (see attached image) shows up. However, I have installed and reinstall the missing Microsoft redistributable package.
I don't know what else to do.
Is there any suggestions on what to do?
I'm thinking your C++ redistributable may have an incompatibility with 10.8.1 (this can happen but it is rare). You could try downgrading. But if that doesn't work I agree tech support is where to go now.
an esriBootstrap.log file should be located in your %temp% folder. Please share that log file with me. This will provide us a little more information.
Esri Install Team