Outlook webpage refreshes whenever emails with attachments are opened or writing new emails

Just as the title says, this began for the first time this morning. My Outlook webpage will refresh within seconds of opening any emails with attachments or opening up a new email to write regardless of email account or browser. I've tried on Microsoft Edge, Firefox, and my main browser, Chrome, to no avail. Have not found any solutions including clearing browsing history/cache/cookies, disabling any and all extensions, and even removing extensions from my browser entirely. I've also reset my password twice, restarted my computer, and don't know what to do from here.