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Engaged Sweeper

I just updated the lansweeper version on our company. They are running fine within an hour but it suddenly stops.

and i just check the event log and there is an error that stops the lansweeper services from running.

Faulting application name: Lansweeperservice.exe, version:, time stamp: 0x6243420d
Faulting module name: unknown, version:, time stamp: 0x00000000
Exception code: 0xc0000005
Fault offset: 0x00007ff918d8f519
Faulting process id: 0x3ad0
Faulting application start time: 0x01d84d466615b957
Faulting application path: C:\Program Files (x86)\Lansweeper\Service\Lansweeperservice.exe
Faulting module path: unknown
Report Id: 7fbca04b-b945-11ec-8136-0050569b1022
Faulting package full name:
Faulting package-relative application ID:

anyone else encounter this problem?
Lansweeper Tech Support
Lansweeper Tech Support
Could you please send an email for this to
Make sure to include also the logfiles below.

Program Files (x86)\Lansweeper\Service\Errorlog.txt, as present on your Lansweeper server.
Program Files (x86)\Lansweeper\Website\App_Data\web_errorlog.txt, if it exists.
Champion Sweeper III
If you haven't already, I would send this info to so they can assist.
Engaged Sweeper
Just an added information: Before the Lansweeperservice event log there's an .Net Runtime error and upon checking it is connected to lansweeperservices.

So in my investigation, on those Win 2012 R2 servers with Lansweeper services, once the March Security update (KB5011564) is applied, LS services will suddenly crash and stopped due to .net error.

uninstalling the patch fix 3 out of 3 servers that encounters that problem.