Is it safe to install the October 2018 Update for Windows 10?


Best answer: No, it’s still not safe to install the Windows 10 October 2018 Update, at least until Microsoft resumes the rollout, which is currently paused.

The Windows 10 October 2018 Update (version 1809) was originally released on October 2, but because of a bug that caused data loss to several users, Microsoft was force to stop distributing the update.

As of October 9, there’s a new update that bumps the version number to build 17763.55, but Microsoft hasn’t clearly confirmed that the file deletion problem have been resolved, and users are still unable to download the ISO or Media Creation Tool to upgrade to version 1809, which indicates that the update is still not safe install.

You can follow the latest updates here.


Microsoft has confirmed that the October 2018 cumulative update KB4464330 fixes the file deletion problems.

The company is also issuing a new version, Windows 10 build 17763.17, that includes the fixes as well, but it’s currently only available for testers in the Slow and Release Preview ring of the Windows Insider Program.

However, it’s still not safe to install Windows 10 version 1809 (October 2018 Update) on your primary machine as the company has to test the fix and once it’s proven safe, it will re-release the update to the public.

The re-release date is yet to be announced.


If you’ve already installed the new version of Windows 10 and your files have been deleted as a result of the bug, the new update will resolve the issue, but it’ll NOT restore your files.

You will need to contact Microsoft directly at +1-800-MICROSOFT or find a local number in your area

If you have access to a different computer, you can contact Microsoft at (the link will vary according to country of origin).

Important: Microsoft says that will help you free of charge, but the company "cannot guarantee the outcome of any file recovery work."


If you don’t want to deal with the Microsoft support, some users are recommending to use data recovery tools such as Recuva to get the files back.