Microsoft says the Excel spreadsheet software is now blocking untrusted XLL add-ins by default in Microsoft 365 tenants worldwide. The company announced this change in January with a new entry added ...

A wave of cyberattacks is exploiting Microsoft Excel add-in files in order to deliver several forms of malware in campaigns that could leave businesses vulnerable to data theft, ransomware and other ...

Cybercriminals are spamming website contact forms and discussion forums to distribute Excel XLL files that download and install the RedLine password and information-stealing malware. RedLine is an ...

Any clues?<BR><BR>Edit: The answer was trivially simple and I feel like a doofus for not thinking of it initially. Solution: log on to server as an admin, do 'change user /install', open Excel and ...