Today I had a problem with my Steam client. I would double click on my icon to open Steam and nothing would happen. This is how I fixed this issue on my Windows 10 computer.

1. Navigate to steam client installation folder – for example C:\Program Files (x86)\Steam
2. find steam.exe and rename it to steam.exe.old
3. restart your computer
4. Navigate to steam client installation folder – for example C:\Program Files (x86)\Steam
5. rename steam.exe.old back to steam.exe
6. open steam client – it will start installing an update and then it will open Steam application.