Having to reinstall lightroom 6 3 times. Every time I install the latest update 20 15.8/6.8. Lightroom will not start and gives the following error message. lightroom.exe - System Error. This program can't start because API-MS-win-CRT-runtime-I1-1-0.dll is missing from your computer. Try reinstalling the program to fix this problem. Needless to say. all previous updates are lost when reinstalling.