What is 0x80004005

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E_ABORT	CO_E_INIT_TLS

E_FAIL

E_FAIL (0x80004005) is a generic unknown error. There is no more specific information. Often this error is returned by the code of programmers who did not have time to give a more specific error code that would describe the problem that occurred. It is also possible that there is simply no such error code (and the programmer is not to blame for anything).

Error code

In computer programming, a return code or an error code is a numeric or alphanumeric code that is used to determine the nature of an error and why it occurred. They are also commonly found in consumer electronics and devices when they attempt to do something they can't do (i.e., dividing by zero) or fail to do and they can be passed off to error handlers that determine what action to take. Error codes can also be used to specify an error, and simplify research into the cause and how to fix it. This is commonly used by consumer products when something goes wrong, such as the cause of a Blue Screen of Death, to make it easier to pinpoint the exact problem the product is having. There is no definitive form of an error code. Some styles use decimal or hexadecimal numbers. Others use alphanumeric codes, while others use a phrase describing the error.

Functional programming

In computer science, functional programming is a programming paradigm where programs are constructed by applying and composing functions. It is a declarative programming paradigm in which function definitions are trees of expressions that map values to other values, rather than a sequence of imperative statements which update the running state of the program. In functional programming, functions are treated as first-class citizens, meaning that they can be bound to names (including local identifiers), passed as arguments, and returned from other functions, just as any other data type can. This allows programs to be written in a declarative and composable style, where small functions are combined in a modular manner.