Deploying problems version 12

[smrtonos11333]

Hello,

i need deploy our scripts whitch was working in version 11. But after upgrade to version 12 have this » 

Preliminary checks failed! Task Service Error. BinaryFormatter serialization and deserialization are disabled within this application.

Any solution?

[TechGuy2223 · Accepted solution]

• 12.2.0.4, LsPush 8.4.100.1, LsAgent Windows 11.4.1.2, SQL 1060

  If you use SQL LocalDB 2014, this release will update your database. Before updating to the newest version, make sure to back up your installation.

  • Fixed: LAN-16727 Scanning large vCenters could result in an HTTP timeout.
  • Fixed: LAN-16852 New scans without SNMP data would be ignored if the existing asset already contained SNMP data.
  • Fixed: LAN-16936 Windows 2025 would show up as Windows 2022.
  • Fixed: LAN-16967 A number of issues related to the chart widget were resolved.
  • Fixed: LAN-16968 Deployments would fail due to BinaryFormatter errors.

[PSHPAdminLansW]

Same issue seen here.. Related to .net 8?  

https://learn.microsoft.com/en-us/dotnet/core/compatibility/serialization/8.0/binaryformatter-disabl...

[dstevens]

We are having the exact same issue since upgrading to 12.1.0.1 from 11.3.0.5.  None of our deployment packages seem to be working now.  Resulting in the same Preliminary checks failed! Task Service Error. BinaryFormatter serialization and deserialization are disabled within this application. error.

I have had a case in for 4 days now with support but so far, it's been radio silence from them.

[smrtonos11333]

Hello DavidPK,

can you tell me, what exactly LS needs to run? services etc...

[DavidPK]

Hi smrtonos11333,

Thank you for posting in the Lansweeper community.

In some cases this can be the Task Scheduler not running on the client machine or with a (remote) permission-related issue. When testing the package on a specific assets, do make sure that, All required services (RPC, Task Scheduler, Remote registry, Windows Event Log...) are running on the targeted asset
 

Ensure no firewall or Anti-Virus setting is blocking the Lansweeper Service from connection to the asset and creating the scheduled task. Temporarily disabling your firewall/Anti-Virus might help in testing if this could indeed be the case. Ensure that your firewall and antivirus software aren't blocking Lansweeper's connection to assets and task creation. Temporarily disabling them can help isolate the issue.

If all the above don't resolve the issue, please contact Technical Support so that we may investigate further

How to contact support?

Make sure to add screenshots and the GatherLogs output file so our SME's can start investigating the issue straight away. 

Using the GatherLogs tool.

[smrtonos11333]

Hello DavidPK,

i tried install the new verion 12.1.0.1 and problem still persist. On server and on target pc are firewall and no antivirus... All works on version 11.4.1.9(btw with antivirus)...