It would prevent automatic restart if an install failed. The only reason I would delete it is if I needed the extra space it takes up. Supposedly we can avoid that need by attaching a temporary drive. I have seen the need and the prompt but at the time was in a VM and didn’t know how to attach a drive on the fly. I wasn’t sure what I was going to do if the install failed but since it was only a VM I wasn’t very concerned. The other thread you pointed out implied that size was not an issue, e.

Then the only thing I can think of is that perhaps the install takes note that there is no possibility of a restart and therefore makes extra effort to getting you somewhere useful. This might be something that ProcMon could help you puzzle out.

These folders are created by Windows, during the upgrade process. As far as I know, it refers Windows Update error 0xc and 0xcb. If your computer experiences an unsuccessful installation then setup rolls back, you should check the setup error located there.

You could delete the folder without no benefit other than occupying space on your hard disk. I consider that it’s something like Windows Update softwaredistribution. After upgrade fail, we could delete or rename it to clear Windows Update cache. Before trying the update again, the directory needs to be deleted — or if all else fails, renamed. Please remember to mark the replies as answers if they help. If you have feedback for TechNet Subscriber Support, contact tnmff microsoft.

However the suggestion to delete the folder is not found in the upgrade failure troubleshooting steps or even as an intermediate or advanced step in troubleshooting. So it was found by trial and error or is there a Microsoft reference for the troubleshooting step? If an OP wants to keep the files that don’t interfere with upgrades and delete the file types that can interfere with upgrades which file types need to be deleted? Please explain. The purpose of the thread is to learn or understand how the BT file may or may not impact upgrades when there is plenty of free space on the drives.

With space constraints out of the picture what I am seeking is information about any files within the folder that can interfere with Windows 10 upgrades. The renaming of the file does not delete the old file and the space remains nearly the same or is slightly reduced. In the case of a failed upgrade, it is better to delete the folder and start the upgrade process afresh. There was no explanation of how it could increase the likelihood of success with the upgrade failure.

It did not indicate the problematic file type or the problematic file. I agree that the presence of some folders seem to inexplicably cause feature upgrade installation attempts to fail. I think it may have something to do with preventing the accidental overwrite of backup files during immediate back-to-back upgrade installation attempts. In any case, if an upgrade is successful, then Microsoft Windows will automatically delete these folders after so many days go by.

If there is no intent on rolling back an upgrade, it seems to me that it is safe to delete these files at any point in time. It would be nice if a new feature upgrade installation attempt would do this for us automatically or at least fail with a more obvious error message. BT remain. If that’s the case, then some files are probably still in use. Sometimes a reboot will help, sometimes not. BT folder to see which files are in use. You might be able to use Sysinternals handle to determine what is using the file.

Or if the name of the file makes it obvious, you might have a corrupt installation. Office Office Exchange Server. Not an IT pro?

Resources for IT Professionals. Sign in. United States English. Ask a question. Quick access. Search related threads. Remove From My Forums. Asked by:. Archived Forums. Windows 10 Installation, Setup, and Deployment. Sign in to vote. How come removing the folder allows Windows upgrades? Should it be part of a step in the upgrade check list to fix failed upgrades? Edited by questionsformicrosoftproducts Saturday, March 31, PM.

Saturday, March 31, PM. Is there any disadvantage in removing the folder? Regards, Please remember to mark the replies as answers if they help. Monday, April 2, AM. They don’t have much free space, and sometimes Windows Updating failed e. Upgrading of version requires more than 15 GB of free space from my experience. Monday, April 2, PM. The deleting of the folder appeared to help at least 19 upgrade failures in the link. The step was used on drives that were not short on free space to troubleshoot the failures.

Within the BT folder are numerous file types: Javascript txt xml bin xsl dat windows performance analyzer trace file cascading stylesheet Which file type can interfere with Windows updates? Tuesday, April 3, AM. Please use features built-in Windows, such as [Clean now] and [Disk Cleanup].

The methods to clean are known. Computers can use 3rd part software such as Ccleaner to remove or delete or clean files. Which file type and how can it interfere with the upgrade? If sufficient free space is left, the BT folder has no impact to upgrading. Somehow the renaming of the file fixed the upgrade failures. How did that happen?

Which file or files interfered with the upgrade and how? Edited by questionsformicrosoftproducts Tuesday, April 3, AM. Wednesday, April 4, PM. Failure of upgrading has several causes. Insufficient free space is one of them. Monday, August 20, PM.

Here’s everything you need to know about $ windows. bt folder | DiskInternals

I am currently running Windows 8. Inside there are the installation files for Windows 10, however this has not been requested as I did not reserve a copy and nor have I manually set anything in motion. Are Microsoft forcing the upgrades onto people? It would explain why our internet connection has been seriously slow I have been holding off on upgrading as all the licenses I have are Retail licenses and there has been plenty of confusion regarding what happens after the upgrade. I have heard that it is Retail to OEM non transferable between devices and also Retail to Retail fully transferable between devices without the need to install the original operating system.

When you upgrade your current version of Windows to a newer version, the upgrade process will create backups of important directories from your previous version of Windows. These directories include your user profiles, Windows folder, Program Files directory, and other important locations. These backups are then stored in two folders called Windows. These two folders, though, can use up a significant amount of hard drive space on your computer.

Therefore, if you are sure you no longer need any of the files in those folders and all of your data and apps have been migrated successfully, it is a good idea to remove these two folders to reclaim that space for other programs to use. Was this reply helpful? Yes No. Sorry this didn’t help. Thanks for your feedback. Please ignore the other reply.

While I’m not sure why if you did not reserve W10 the files were downloaded. Do you have the GWX icon on your taskbar and can you double check what it reports? In essence, if you upgrade a machine with a retail 8. Threats include any threat of suicide, violence, or harm to another. Any content of an adult theme or inappropriate to a community web site. Any image, link, or discussion of nudity. Any behavior that is insulting, rude, vulgar, desecrating, or showing disrespect.

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You can follow the question or vote as helpful, but you cannot reply to this thread. I have the same question 0. Report abuse. Details required :. Cancel Submit. Hi Thank You for posting in Microsoft community When you upgrade your current version of Windows to a newer version, the upgrade process will create backups of important directories from your previous version of Windows.

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