I've been trying to open Hotmail to change my settings but things have gotten worse, I've been able to fully access my account only twice in the past four days. I do use Skype but it is not enabled through MSN. As for Hotmail add-ons, I deleted all entries in my MSN Calendar including all notification features I had enabled.
By going to Manage Integration I found out, unbeknownst to me, some of the Add-ins were turned on. I turned them all off. I still haven't noticed an improvement in getting to my e-mail.
This morning as I attempted to open my e-mail, I got a message saying that OneDrive needed upgrading. In desperation I agreed, thinking that may be the source of my problems. After waiting some twenty minutes with no action in the download from OneClient.stx.ms to OnedriveSetup.exe, I refreshed the page. That started the process but when it got stuck at 1%, I aborted the process. To the best of my knowledge, I've never used OneDrive.