Here is a scenario. When you want to delete a file or folder in your Windows, it is “undeletable”. No matter how many times you delete, you always get an error message that looks something like this: (note: z is a folder)

Or other error messages such as:

Cannot delete file: Access is denied
There has [...]

Sometimes it’s really annoying to get error codes when using Microsoft Windows, yet we don’t know what do those error codes actually mean. The easiest way is to get connected to the Internet, and google for the meaning of the error codes for troubleshooting.
What if you don’t have an Internet connection while having such [...]