Microsoft recently made available Edge 90 with several new features, but shortly after the release, many users trying to update began to receive the “error code 7: 0x800421F7 — system-level” that prevents the browser from downloading updates and extensions.
For example, at Reddit, user puppy2016, reported that the Edge browser update stopped working on multiple computers with error 0x800421F7. I personally tried to update from version 89 to 90, and it has not been possible on any of my devices.
If you follow the link in the error message, it takes you to the documentation’s page, where it reveals that error 0x800421f7 means that the update server is busy, and you should try at a later time, indicating that it is not a problem with the software, but rather, it is a problem with Microsoft servers trying to deliver the update.
Fix Microsoft Edge error 0x800421F7
If you are dealing with this problem, there is nothing you need to do other than wait until the company resolves the issue.
However, if you are eager to use the new version, you can either download and install the latest build available in the Beta Channel. Or you can download the offline installer available on the Microsoft Edge support page for business since going to the official site will detect that you already have the browser installed, and you won’t get the download option.
While in the Microsoft Edge for Business page, select channel (stable 90), build (90.0.818.39), platform (Windows 10 64-bit), and the Download button will be available. Once you download the installer, double-click it to launch, and continue with the on-screen directions to complete the update.