I've been using LastPass for years, generally through the original Chrome extension.

In recent months, certain features of the extension have been totally broken, such as the ability to share passwords or the ability to generate new random passwords.

(Their support team has been unhelpful, as others have experienced too, such as here.)

So I figured I'd completely uninstall the extension and install again.

When I downloaded the LastPass Universal Windows Installer at https://lastpass.com/misc_download2.php, it prompted me with an user-unfriendly message (perhaps inexcusably user-unfriendly, given the security-related nature of the app):

To install the UWP application we will enable sideloading on your machine. Are you sure you want to continue?

I don't know what that means, but it sounds like a security risk on the app that I most want to be secure.

I found Microsoft docs that seem to inform developers:

To sell your Universal Windows Platform (UWP) app or distribute it to other users, you need to package it. If you don't want to distribute your app through Microsoft Store, you can sideload the app package directly to a device or distribute it via Web Install.

What does that mean? What are the risks for me as a user?


There's no more risk installing LastPass by sideloading than there is installing/running any other executable that you download. And since LastPass is well-known and trustworthy, it's basically no risk at all. Microsoft is intentionally making it sound much more dangerous than it is in an attempt to strong-arm everyone into their store.

  • Well, people are less likely to install malicious apps if only installing them from a store (assuming the store has some quality control) Nov 12 '19 at 23:32
  • 3
    @multithr3at3d That's quite a big assumption. Nov 13 '19 at 1:10
  • 1
    Thanks for your answer. The point about Microsoft’s incentives is plausible. But about LastPass being trustworthy: the facts that they let bugs stay unfixed for months and that their installation process doesn’t explain beforehand what the hell that cryptic warning (which I now guess is from Windows) means worry me.
    – Ryan
    Nov 13 '19 at 13:37
  • 1
    @Ryan they're trustworthy, meaning they're not intentionally trying to harm you or your system. I didn't say they were perfect coders who never write buggy code (no one is). Nov 13 '19 at 15:22

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.