Hi,
We had a related occurrence with our client's Kaspersky immediately after we upgraded our entire client site to 9.2 in December, so it's not just MSE.

The symptoms that we faced, were all LanPaks (30) were gone after 10 users had logged into the system in GL and AP.

We also had Kaspersky conflicts with printing to PrintBoss drivers where the printing of checks lost the connection to PrintBoss.

We resolved by quickly excluding the local Softrak footprint on the user workstations, and excluding the Softrak and data folders on the server.

I suppose we should have reported these situations earlier, but we've been busy.

We do not know if this was related to a Kaspersky update, but we know definitely that the situation started immediately on the first morning after we did an evening upgrade to 9.2. We have drawn our own conclusions and will be moving quickly to ensure every 9.2 site will be excluding these folders, if they have not already been excluded. Normally, our best practices would exclude these folders from AV scanning.

For the people who have been asking, we also use Trend for our protection which works very well if set up properly. This is not an endorsement of the product that we use or to say that your AV selection is good or bad, although with free software, you sometimes get what you pay for.

And we do not recommend Essentials to any of our site clients because of noted above issues with OE that we also discovered several years ago. But this new noted issue is not isolated to Essentials.

Brian