This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(265.6, 44%, 35%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EH%3C/text%3E%3C/svg%3E)
Hi,
I'm working on a WinUI3 desktop application in CPP. I'm building an application packaged with external location. There I read that
What does tamper protection mean here? Does it mean it wont allow us to tamper with application's data and files?
I Installed an Application from Microsoft Store (iTunes) and deleted some files from its installed location
with that I was not able to run the application.
My doubt is tampering with the file made the application to fail, so what does tampering protection mean here?
Thank you
Hello,
Welcome to Microsoft Q&A!
I suggest you could refer to the Doc: User experience
When package integrity is checked and the system identifies that the package files have been tampered with, depending on the source of the package, a dialog will appear to the user indicating that there is an issue with the app. If the app comes from the store, the user will be directed to act via the Store app. If the app comes from outside the Microsoft Store, the user dialog will be generic. The user will be prompted to go to the Settings app and either Repair or Reset the app.
As far as I'm concerned, the tamper protection means that when package integrity is checked and the system identifies that the package files have been tampered with, the user will be directed to "repair" or "reset" the app based on the source of the package.
In my opinion, tampering with a file does not mean deleting the file.
Thank you.
Jeanine
If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.
Oh okay, Thank you
@Jeanine Zhang-MSFT , if we set
<uap10:Content Enforcement="on" />
to packaged with external location application, will the application be tamper protected?
<uap10:Content Enforcement = 'A string that can have one of the following values: "on", "off", or "default". The value "default" currently has the same behavior as "off".' />
Indicates whether Windows will enforce run time package integrity checks on the entire contents of the package.
If you set <uap10:Content Enforcement="on" />, Windows will enforce run time package integrity checks on the entire contents of the package. It is suitable for the normal MSIX package.
Yes my confusion here is the documentation explicitly mentioned that packaged with external location will not support tamper protection
so with this change will be be able to get the tamper protection?
According to the Doc: Package with external location
A package with external location contains a package manifest, but no other app binaries and content. As mentioned above, this support enables apps that aren't yet ready for all of their content to be present inside an MSIX package to use Windows extensibility features that require package identity.
It seems that <uap10:Content enforcement="on" /> is not suitable for packages with external locations.
Okay thank you