Hello @AnnaG,
welcome to this moderated Azure community forum.
Regarding installing the Runtime, yes, it can be installed using a Windows installer.
Multiple runtimes can be installed on the same machine, without conflict.
But you need to check the applications making use of it, the challenge is the applications making use of .Net.
Please test you applications for being restarted on a machine .having .Net 7 installed anymore (I see .Net 6 is installed also).
This could lead to an exception the required framework is not found.
On the same page more information is available about eg. roll-forward behavior (If you already have a higher version of the required framework installed, you can make the application run on that higher version by configuring its roll-forward behavior).
So yes, there are and you probably need to restart all your applications so testing the applications and consulting the developers (eg. to see if the applications can be upgraded to the newest .Net version) is highly recommended.
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