Installing Ruby 2.4 without Tears on Windows



First we need to

1. Download ruby installer from here,

2. Download msys2 installer and install it. It is all right if you don't. Step 3 will force you to do it. :)

3. Run ruby installer. At the end of it, installer is intelligent enough to prompt you to install MSYS2.

You basically need to go through all 3 option prompted.

1. MSYS base installation



2. MSYS2 System update




3. MSYS2 and MingGW development toolchain






Once you have done that, open up command prompt and start installing your gems, for example :-

gem install rails.



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If you're getting  exception when trying to assigned key to a symmetric key and getting error message below :- The specified initialization vector (IV) does not match the block size for this algorithm And your code probably look like something below :- Then you need to go into debug mode and start looking into the supported size for IV as shown in diagram below :- As you can see, IV is 16 bytes, so you need to provide 16 bytes. The same goes for Key field too, if you're adding anything to it. As long as you provide a valid key size, then we're good and you're code will be ready.
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