Affected users report that whenever this occurs, MediaCreationToolx64.exe will display the following error message when the utility is opened: “There was a problem starting Setup. Close the tool, restart your PC, and then try running the tool again.” Apparently, the obvious stuff like restarting the system or downloading another MediaCreationToolx64.exe will not resolve the issue. However, there are a number of fixes that a lot of users in a similar situation have used to resolve the issue. Please follow methods below in order until you find a fix that resolves the issue and allows you to complete the upgrading process.

Method 1: Deleting the $Windows~BT$ and $Windows~WS$ folders

Most of the time, this particular issue is caused by a couple of hidden folders that are associated with the MediaCreationToolx64.exe tool – $Windows~BT$ and $Windows~WS$. These two locations are responsible for storing temporary download files needed for the upgrade process. The solution involves deleting the two folders along with their contents, thus allowing the MediaCreationToolx64.exe tool to start fresh. However, the folders can’t be touched unless you’re using Safe Mode. To make things easier for you, here’s a step-by-step guide on restarting in Safe Mode and deleting the $Windows~BT$ and $Windows~WS$ folders in order to fix the “There was a problem starting Setup.” error of the MediaCreationToolx64.exe tool : If this method wasn’t succesfull or you’re looking for a different approach, continue down to Method 2.

Method 2: Applying all pending Windows Updates

Other users have reported that the issue was fixed automatically after they successfully used Windows Update to apply every update that was pending. Users encountering the same problem reported that the Media Creation Tool opened without the “There was a problem starting Setup.” error after all the updates have been applied successfully. Here’s a quick guide on making sure your Windows version is up to date: If you still encounter the same issue, continue down with the next method below.

Method 3: Running setupprep.exe in the ESD folder

Other users were able to resolve the issue by running the SetupPrep executable from the ESD folder. The ESD folder is located on the root folder of the Windows drive and is used by the operating system for electronic software delivery chores. To be more precise, Windows uses it to install files on your PC via an internet connection. Navigate to C:\ ESD \ Windows \ sources and see if you manage to locate setupprep.exe. If you do, double-click on it and follow the on-screen prompts to complete to upgrade from here. You should be able to do so without seeing the “There was a problem starting Setup.” If you are still experiencing the same behavior, continue down with the next method below.

Method 4: Running the Windows Update troubleshooter

If all of the methods above have proven to be a bust, you should see if the Windows Update troubleshooter manages to resolve the issue. Some users have reported that the issue was automatically fixed after they ran the Windows Update troubleshooter. Here’s a quick guide on how to run the Windows Update troubleshooter:

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