katycomputersystems 1 Posted April 27 Share Posted April 27 Tuesday afternoon, several of our end-users are reporting issues with Outlook attachment handling when ESET Endpoint Security v 10.0.2045.0 is installed. Outlook locks up when attempting to save, preview or view attachments. We have tested PDF & XLSX attachments, both file types have the same issue. We have tried many things, the only certain resolution is uninstalling ESET Endpoint Security. The affected computers are running these versions of office. Microsoft 365 / Outlook v2301 16.0.16026.20238 Microsoft 365 / Outlook v2303 16.0.16227.20280 Microsoft 365 Apps for business / Outlook v2304 16.0.16327.20214 Some users are on W10 others are on W11 What settings can we change to make this a better situation for our end-users. Quote Link to comment Share on other sites More sharing options...
Administrators Marcos 4,704 Posted April 27 Administrators Share Posted April 27 Please raise a support ticket. We've seen issues like this when Windows didn't turn off Windows Defender and it was running concurrently wih ESET. perbauer 1 Quote Link to comment Share on other sites More sharing options...
Michelle911 0 Posted April 27 Share Posted April 27 I was having the same issue and found that Windows Defender was not turning off with Eset installed. Once I turned off Windows Defender through group policy (or local security policy in a workgroup) to I have no more issues. Quote Link to comment Share on other sites More sharing options...
perbauer 0 Posted May 11 Share Posted May 11 On 4/27/2023 at 10:30 PM, Marcos said: ... turn off Windows Defender ... Is it enough to turn off Real-time Protection in Windows Defender under Virus & Threat Pro.? See image Quote Link to comment Share on other sites More sharing options...
Aaron Haydon 0 Posted May 15 Share Posted May 15 @katycomputersystems We are only having the issue with Lenovo Laptops at the moment is that the case for yourselves? Quote Link to comment Share on other sites More sharing options...
Administrators Marcos 4,704 Posted May 16 Administrators Share Posted May 16 On 5/11/2023 at 8:34 AM, perbauer said: Is it enough to turn off Real-time Protection in Windows Defender under Virus & Threat Pro.? See image That should be enough I assume. Quote Link to comment Share on other sites More sharing options...
perbauer 0 Posted May 16 Share Posted May 16 Just now, Marcos said: That should be enough I assume. I just tested this yesterday and sadly it was not enough to only disable Real-time Protection. I ended up disabling all of Defender. Quote Link to comment Share on other sites More sharing options...
perbauer 0 Posted May 16 Share Posted May 16 11 hours ago, Aaron Haydon said: @katycomputersystems We are only having the issue with Lenovo Laptops at the moment is that the case for yourselves? Nope, on HP here. Quote Link to comment Share on other sites More sharing options...
Aaron Haydon 0 Posted May 22 Share Posted May 22 We have used this workaround to solve the issue New-ItemProperty -Path “HKLM:\SOFTWARE\Policies\Microsoft\Windows Defender” -Name DisableAntiSpyware -Value 1 -PropertyType DWORD -Force Hope this helps Quote Link to comment Share on other sites More sharing options...
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