Let's do following -
- Turn off your Windows Defender or any other AV for few minutes (enable after that) and then try to install.
How to Turn off Defender - https://support.microsoft.com/en-in/help/402718...
- Re-register Isdone.dll
Type cmd in Cortana Search > Right click on Command Prompt > Run as administrator > Copy and paste and Enter the following into Command Prompt
regsvr32 Isdone.dll
- Try running SFC / DISM and check after this