FSX Acceleration Error Code 1-80004005

Ok, I just installed Flight Simulator Acceleration and when ever i start FSX i get a error message saying: "sorry,an unexpected error occured which is prventing product activation from being completed ERROR CODE 1-80004005" i've searched bout 5 hours on the Internet trying to find a solution. The only thing i can find is that its something with the registry. Please Help!

Question Info

Last updated June 23, 2019 Views 18,349 Applies to:


1.     Has the game ever worked earlier or it is the first time you are trying to play?

2.     Which operating system is installed on the computer?

Method 1:

You may try the steps from the following link and check if it works:

Flight Simulator X: “An error occurred while attempting to activate the product The problem may be due to an incomplete installation of the application”



Method 2:

Registry Disclaimer:
Important this section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
How to back up and restore the registry in Windows:

a. Click Start and type regedit in the search bar and pressenter.
b. Browse to the following location:
c. Find Upperfilters listed under it, and check its value, if its 0 change it to PartMgr and click OK out.

Let us know if it helps!


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