Failure(s) with available Windows credentials from the instance
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08-26-2020 06:25 AM
We have two devices build with 2019 OS and both devices were opened firewall , both are same configuration
One device able to discovery and another one isn'tdiscovering properly ( Failure(s) with available Windows credentials from the instance.</error><error>The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)
I can able to take remote access through mid server , is this any port needs to open for firewall or how to check this
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08-26-2020 06:32 AM
Sukran,
This typically is due to a) not having an account mapped to the local admin group or b) not being able to get through a firewall. WMI uses randomized ports which makes it difficult to open up the firewall for it which is why we usually place MID servers on the other end.
https://hi.service-now.com/kb_view.do?sysparm_article=KB0564282
If you look in that article there are some commands you can run to do a WMI test and if you search the community site you will find some articles from Doug on the best way to troubleshoot. RDPing into a box from your MID server does not properly check your access to a server.

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08-27-2020 01:39 AM
Hi,
gwmi will give you a clear picture of this.
Also check where the packet is getting drop. First point for credentials validation is port 135 and then all other high ports.
Thanks,
Ashutosh