Starting last month, log entries like this started to appear in our IIS web logs:
2020-09-08 17:31:07 192.168.1.99 OPTIONS /apps/foo/setup.exe - 80 - 192.168.1.77 Microsoft-WebDAV-MiniRedir/10.0.19041 - 200 0 0 52
2020-09-08 17:31:07 192.168.1.99 PROPFIND /apps/foo/setup.exe - 80 - 192.168.1.77 Microsoft-WebDAV-MiniRedir/10.0.19041 - 404 0 2 52
2020-09-08 17:31:07 192.168.1.99 PROPFIND /apps/foo - 80 - 192.168.1.77 Microsoft-WebDAV-MiniRedir/10.0.19041 - 404 0 2 52
These setup.exe
files are the executables created by Visual Studio when publishing a .NET desktop application to a LAN share for installation on the user's desktop via the web browser.
I am not sure what's going on there and would appreciate any guidance.