Getting ERROR 577 starting F-Secure Ultralight Services

Maurilio

From nowhere one computer in my network does not start F-Secure propely anymore and constantly asks for a system restart.

Three services, F-Secure Ultralight Network Hoster, F-Secure Ultralight Hoster and F-Secure Ultralight Protected Hosted, won't start. When I try to force I get the message "Error 577: Windows cannot verify the digital signature for this file.A recent hardware or software change might have installed a filed that was signed incorrectly or damaged, or that might be malicious software from an unknown source"

I tried to reinstall f-secure, but the problem persists. The Manager shows nothing adnormal. Windows Firewall and Defenfer are desable. 

Can someone help me to figure out how to solve this?

Windows 7 SP1, Client 14.22

Protection Malfunction. Restart your computer.

linck_tello

Hello Maurilio

This KB solve this issue with endpoints without Windows Updates.

IMPORTANT: Windows 7 SP1 and Windows Server 2008R2 MUST be patched to maintain protection - F-Secure Community

https://community.withsecure.com/home/leaving?allowTrusted=1&target=https%3A%2F%2Fcommunity.f-secure.com%2Fcommon-business-en%2Fkb%2Farticles%2F9001-important-windows-7-sp1-and-windows-server-2008r2-must-be-patched-to-maintain-protection

Issue: Windows 7 SP1 and Windows Server 2008R2 MUST be patched with KB4474419 to maintain protection due to changes made by Microsoft related to driver signing. If patch KB4474419 is not installed, the F-Secure client will fail to install updates and request for restart / reboot. The product user interface will show a…

Best Regards

Linck Tello Flores

INNOVARE

Maurilio

Thanks for the answer.

In order to install the suggested KB, we also had to install this other one: kb4490628