Answered Using the most current version of ZoneAlarm Extreme Security (Not NextGen) purchased on September 19th, 2022, I now have issues with Microsoft Office 365, specifically Excel "Cut & Paste", "Copy & Paste", and the Cell outline disappears in Excel. There are numerous users with the same problem for years, and many fixes that don’t solve the problem. To use Excel without having these issues, I disconnect the Gigabyte Fiber from a switch, “Exit” ZoneAlarm, and Excel functions flawlessly. Since you disconnect from the Network, Excel Spreadsheets must be on the local system, not conducive to the Business world with shared files. //<Start of error message.> Microsoft Excel ! We could not copy the content to the Clipboard, it is in use by another application. You can still paste your content within this workbook but it will not be available in other applications. //<End of error message.> This can be replicated on a Desktop System and a Laptop System. Facebook Twitter LinkedIn 0