Rename users security ID

[Glace]

Hi, i have urgent question. Can i rename security ID of PC without renaming on local PC?

I renamed pc after instalation of splunk forwarder but Security ID in logs still shows old  name. How can i fix it without having to renaming it in local INPUTS.conf SERVER.conf. 

Thx for fast response

[Glace]

Security ID = Instance  name