Solution for "Can't execute file" error when installing Gyazo.

>> Can't execute file:
>> ShellExecuteEx failed; code -2147221003
>> Application not found

If you get this error when you try to install Gyazo, it might be related to the associations for web protocols on your computer. 

Please check if the HTTP and HTTPS protocols are associated with Chrome (or your  default browser) on your computer.

You can check the protocol associations and update them as follows:

Windows 7

1. Click Start > Default Programs > Associate a file type or protocol with a program.
2. Click "HTTP" and "HTTPS", then click Change program.
3. Click Google Chrome or other web browser that you want to use.
   
4. Click OK.

Windows 8.1

1. Click Control Panel > Default Programs > Associate a file type or protocol with a program.
2. Click "HTTP" and "HTTPS", then click Change program.
3. Click Google Chrome or other web browser that you want to use.
   
4. Click OK.

Windows 10

1. Click Start >Settings > System > Default apps > Choose default apps by protocol.
2. On the right of "HTTP" and "HTTPS", choose Google Chrome or other web browser that you want to use to be shown.