Failed to retrieve a component with a CLSID of {*} in the COM class factory because the following error occurred! Solutions

Do a website, on their own computer without errors, but posted to the server, browsing one of the pages when the title of the wrong. Also find a lot on the internet, say what to add permissions to Word, the result is not. Later looked at the code, found inside a reference to a DLL file, so the file registration, the result is good.

This problem has also been encountered last time, click Not to put down the solution, so this time also wasted a lot of time to get it. This time, if you meet again next time, you can follow the same method to solve. Also hope to be helpful to everybody.