Cool File Viewer - Microsoft Community
https://answers.microsoft.com:443/en-us/windows/forum/all/cool-file-viewer/5b93eb6b-c35d-4ae5-888c-e34b367605b6
WEBFeb 4, 2022 · Mike Walker 57. Created on February 4, 2022. Cool File Viewer. Hi, our Office 365 updated recently (annual update) and all of a sudden, we are unable to open and view email attachments we receive, particularly excel. When we receive an email and try to to open it, we get a Cool File Viewer pop-up asking for a subscription.
DA: 76 PA: 12 MOZ Rank: 92