Solved PC loose connectivity to server

October 27, 2019 at 08:40:53
Specs: Windows 10, N/A
'Network link is disconnected' issueHello.
I'd like to have your advice, folks. It's in my business environment and I am assigned to fix the issue.I have PC running Windows 10. It's on LAN but not in domain. Every night it should 'copy' a local file to shared remote file server. It works fine every day except Saturday i.e. it falls to copy to server because (likely) it fails to connect to share. I started to investigate and noticed in 'event viewer' that on Sunday morning at 9 AM it has Warning like: "Network link is disconnected"
I setup 'ping' batch every 15 sec and it confirms that on each Saturday from 11 AM till Sunday 9 AM it failed to ping and then it restores.
Than I setup a Scheduled Task to copy a file every 15 min to that 'share' assuming it might keep connection alive but it did not help. I mean that log also shows that it failed to copy at that time.
My questions:
1. what could be the reason?
2. how could I fix it?
3. does it look like network adapter issue or rather 'power settings' issue (I checked that power setting is set to 'balanced' and 'standard' and in most cases action is 'never' sleep and etc
4. how else could I troubleshoot it?

Thanks


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✔ Best Answer
October 28, 2019 at 06:52:34
I setup 'ping' batch every 15 sec and it confirms that on each Saturday from 11 AM till Sunday 9 AM it failed to ping and then it restores.

Ok, you know when it happens, the question now is why?

It's either the PC itself shutting down the NIC, or it's the port on the switch shutting down. Are you using a managed switch? If not, then it's your PC.

If it's your PC, check system logs and Event Viewer for anything happening on Saturdays at 11 am.

I have a couple questions for you.
1) How important is it that this file copies every night? Can Saturday nights be missed without any serious problems? If so, then don't worry about it as long as it's copying the other 6 nights of the week

2) Can you not set the file to copy at 10 am?

Since the NIC goes down at 11 am Saturday and comes back up at 09:00 on Sunday, a 10:00 job would copy it on both days and you'd have all 7 days covered.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***



#1
October 27, 2019 at 16:08:23
"Network link is disconnected"
If it is Event ID: 27, here are some possible fixes.
http://www.eventid.net/display-even...

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#2
October 27, 2019 at 16:40:06
More here.

Fix network connection issues in Windows
https://support.microsoft.com/en-us...
Select Product Version
http://imgur.com/vxEM4RS


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#3
October 27, 2019 at 19:53:06
Is there some ACL (Access Control Level) set on the server?
Is this a Windows or Linux server type?

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Related Solutions

#4
October 28, 2019 at 03:30:29
This is Windows 10
It has ACL on server but my concern is that the same action works fine all days except Saturday
Thanks

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#5
October 28, 2019 at 06:52:34
✔ Best Answer
I setup 'ping' batch every 15 sec and it confirms that on each Saturday from 11 AM till Sunday 9 AM it failed to ping and then it restores.

Ok, you know when it happens, the question now is why?

It's either the PC itself shutting down the NIC, or it's the port on the switch shutting down. Are you using a managed switch? If not, then it's your PC.

If it's your PC, check system logs and Event Viewer for anything happening on Saturdays at 11 am.

I have a couple questions for you.
1) How important is it that this file copies every night? Can Saturday nights be missed without any serious problems? If so, then don't worry about it as long as it's copying the other 6 nights of the week

2) Can you not set the file to copy at 10 am?

Since the NIC goes down at 11 am Saturday and comes back up at 09:00 on Sunday, a 10:00 job would copy it on both days and you'd have all 7 days covered.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


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#6
October 28, 2019 at 08:54:37
It could be the router programmed to shut down the network for that time frame. If you have access check into router settings, else see IT that sets it up and maintains it. It could be that the server could be backing up important stuff to the cloud at that time frame and shuts out all other access.

You have to be a little bit crazy to keep you from going insane.


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#7
October 28, 2019 at 17:07:27
- Curt R
I like your suggestions better than others because I think similarly.
My PC is on managed switch but I don’t have any access to it.
It is important to have this file daily because it’s a backup.
I set it run at 10 PM daily but it should not make difference (in my opinion) if I move it to 10 AM
It’s definitely not the right solution of the root issue but this trick hopefully should work for me.
Thanks again

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#8
October 29, 2019 at 06:54:14
I'm a firm believer in the KISS principle and changing the time of the backup circumvents the issue and maintains your backup with minimal effort.

I would still want to figure out what's causing this. If for no other reason, for my own knowledge. While I've never tried it, I suppose it is possible to disable an interface on a managed switch for a period of time. I'll have to check that out on mine and see. I know I can run scripts so it seems likely I could down a particular interface for a period of time.

If you do decide to check into it I'd like to know what you discover. If it's not your PC, I'd recommend you contact the person/people who do manage the switch and ask them about it.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


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#9
October 29, 2019 at 07:01:16
The situation does read as though there is a timed connection somewhere in the chain' possibly buried in a profile of sorts?

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#10
October 29, 2019 at 14:50:46
Well ... as I mentioned before I no control and access to switch and it’s not my PC and my task was only to setup copy process of backup file to remote share.
Based on the above I am not planning to do further investigation despite I also would like to know the root of issue.
I am planning to change the time of backup to 10 AM, monitor it for some while and that’s it.
Btw I am also strong supporter of KISS concept and this approach kind of comply with it.
Thanks again

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#11
October 29, 2019 at 16:06:32
Accepting the need to resolve the current situation, and yet wishing to know the what 'n why etc. behind the problem... I agree wit the KISS approach at this time. It's how I'd go pending further discovery and research.

Should you finally discover the cause(s) perhaps you can let us know wot ot woz...?


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