Troubleshooting is a problem-solving process of evaluating faults that occur in a mechanical or electronic system. Steps often include recreating the problem and then trying alternative and creative solutions in order to fix the situation. Troubleshooting is deployed when software or hardware are rendering abnormal responses or remain unresponsive.

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We noticed our WiFi has disconnected sometimes and is intermittent.

I have been pinging our WiFi network and stored the log in a text file.

I got the message "Request timed out" on some pings.

How much ping timeouts are acceptable?

Issue Activating windows 2012 R2 Datacenter.
server was built years ago by a previous engineer and he never activates server. ISO was create with previous expired license key from previous MVLS. now that im trying t o activate with current and different MVLS i get invalid key. troubleshooting get error -
error 0x80070426 on a computer running microsoft windows non-core edition

thank you in advance
Been troubleshooting this will several teams but to no avail.  This is referencing ACAS/Tenable "Credentialed" Scans.  Not able to run credentialed scans from System Center.  Help Please
I have setup Enterprise Voice / Direct Routing for Microsoft's 'Phone System' element of Office 365 and Teams. We're using a Ribbon SBC Edge (1000) border controller which has a very useful wizard and it's own FQDN certificate from godaddy.

I've enabled enterprise voice in Office 365 online powershell and setup routing policies to allow outbound calling to +44 uk numbers.

In Direct Routing, the SBC is showing as active and in use. I can make calls TO MS Teams clients using DDIs on our SBC routing calls successfully to Teams. However, Teams clients cannot dial out to the PSTN.

We've run trace logging on the SBC which shows all the SIP traces - it can see all the 200 OPTIONS coming to and replying from Microsoft, but it never sees microsoft attempt an invite to a call. For some reason Teams is not reaching out to our SBC when we try to make a call.

Does anyone have any advice for troubleshooting in O365/Powershell to determine why the call doesn't reach our SBC?

Issue joining a domain

I am having the following problem adding a fileserver to a domain.

Background:  Server is a member server, able to see the DC via nslookup, and ping it. Firewall is also disabled on member server, and I have correct permissions to add server to domain (unfortunately, I do not have the rights to log into the DC itself).

Here is the Netsetup logs:

12/24/2019 18:29:37:218 NetpDoDomainJoin
12/24/2019 18:29:37:218 NetpDoDomainJoin: using current computer names
12/24/2019 18:29:37:218 NetpDoDomainJoin: NetpGetComputerNameEx(NetBios) returned 0x0
12/24/2019 18:29:37:218 NetpDoDomainJoin: NetpGetComputerNameEx(DnsHostName) returned 0x0
12/24/2019 18:29:37:218 NetpMachineValidToJoin: 'Servername'
12/24/2019 18:29:37:218 NetpMachineValidToJoin: status: 0x0
12/24/2019 18:29:37:218 NetpJoinDomain
12/24/2019 18:29:37:218       HostName: Servername
12/24/2019 18:29:37:218       NetbiosName: Servername
12/24/2019 18:29:37:218       Domain:
12/24/2019 18:29:37:218       MachineAccountOU: (NULL)
12/24/2019 18:29:37:218       Account: @@BR7fmEJmblZSrrdbzB8sjUn236WJ
12/24/2019 18:29:37:218       Options: 0x27
12/24/2019 18:29:37:218 NetpValidateName: checking to see if '' is valid as type 3 name
12/24/2019 18:29:37:218 NetpValidateName: '' is not a valid NetBIOS domain name: 0x7b
12/24/2019 18:29:37:812 NetpCheckDomainNameIsValid [ Exists ] for '' returned 0x0
12/24/2019 18:29:37:812 NetpValidateName: name …
Dear All,

   I have a Lenovo x250 laptop, and this laptop installed on docking station, and I found the lan port on the docking something not working probably, I need to click lan troubleshooting in order to make the network resumed, and I was trying to use the NIC from laptop itself, but after I connected to NIC in the laptop, the icon still show disconnected, tried to by pass the docking, it could connect to LAN. just wonder is there anything setting from Lenovo can make the NIC work from the laptop while using the docking station ?

Hi Experts,

I am programming stuff using Caspio tools, since they only provide revision history to some of their features, I had requested we invest in a custom program that will connect online and perform that in a scheduled bases (as manually its possible to accomplish that from their site).

I had mentioned to our manager that its very useful when debugging stuff to know when exactly did a certain problem started to occur.

and this was manager's response.

...I still don’t get how back-ups will help in troubleshooting. Is it more than just back-ups?

Perhaps you can point to a place where this usage and benefit its being clearly explained in a more professional way.

In addition I would like to have an idea what could cost such a task (writing a script that will logon to our Caspio account and perform the export).

My company has recently carried out a purge of our Inventory Assets and have now restarted the process of auditing our PCs through GP which pushes out the Audit executable. Checks in Inventory shows that for some of our PCs, the User field is populated with data which is not current whereas others displays the correct / last logged on User. There are multiple cases where the User field displays the names of employees who have not logged onto the PCs in years. The XML file in the data folder on the TrackIT server produced by the audit also contains this stale / incorrect Username.

Troubleshooting efforts:
-We’ve tried initiating the audit from within Inventory and tried manually running the Audit executable locally on the affected PCs
-Renaming the located in the root directory of the affected PCs.
-Replacing the Auditcfg.ini located on the server’s root folder

None of these resolved the issue.  Any thoughts would be appreciated.

I have three Edgerouter X running site-to-site VPN (site a, b and c) .  Everything was working fine until the devices were restarted.  I've gone through all of the available troubleshooting and can't see to figure out why Site A and Site C cannot ping anything on Site B.  I've checked and double checked all of the configs and everything matches up.  I know that there are some known issues with version 2.0.6 so I'm running 1.10.10.  Do you have any ideas I can try?  Thanks!
Only admins can log into outlook web access in exchange server 2016. when the end users are trying to do the same they are getting the error: username or password incorrect.
When trying to configure the same account in outlook : Same error.
What has been done so far: This seems to be an issue with some kind of permission as when I am adding the same user account as local admin in the exchange server then we are able to login.
Other troubleshooting done:
Checked all webservices (virtual dirs.) OK Checked certificates OK Checked autodiscover OK Checked IIS perms settings Restarted server / iisrest UpdateCas.ps1 script OK .

Tried to run test-outlookconnectivity which gives the output as OK.

Checked the permission on the exchange folder in the exchange installation path and everything was okay.

Ran get-mailboxpermission on affected account and compared it with my test lab admin account and found few orphaned SID's then verified the same in the Exchange 2010 and it has the same SID's as well (created a test account in Exchange 2010 and user is able to login to OWA).

Also found out that the affected server(2016) was not populated as member in the exchange trusted subsystem container when he checked it then he added it manually. Since we have one more exchange server 2010 where everything is working fine.

Tried to add the full permission to everyone in the exchange server installation …
I have a StoreFront system running version 3.15.  This is sitting on a Windows 2012 server.  There are 2 stores configured.  one store is pointed to our existing XenApp 6.5 environment, the other to our new XenApp 7.15 environment.  

All was going well yesterday and then all of a sudden for every published app regardless of whether or not it is hitting the XenApp 6.5 or XenApp 7.15 backend servers provides the error "Unable to connect to the server.  Contact your system administrator with the following error:  Socket operation on non-socket (Socket Error 10038)" or "The published resource is not available currently.  Contact your system administrator for further assistance."  This is happening with all applications.

I have ruled out the backend XenApp 6.5 servers in testing as I can reach those going through Secure Gateway/Web Interface instead of Netscaler/Storefront.  I can't test XenApp 7.15 the same way.  I am not seeing anything in the Netscaler Logs, however; maybe I'm not looking in the right place.  However; it seems the issue is with  Netscaler.  If I go direct to StoreFront, the apps launch.  

To aid in troubleshooting, I rebooted the Netscaler and StoreFront systems yesterday - no change.

Troubleshooting is more difficult as I am not able to find anything logged in Event viewer on the StoreFront system in the App, System or Citrix Delivery Services logs.

On the XenApp servers, I am not finding anything in the Event logs either.  How in the heck do I …
Hi Experts, I would like to get some help with troubleshooting a Site-to-Site VPN connectivity between two ASAs. I need to NAT the internal subnet on both sites to a pubic IP address in order to avoid overlapping subnets. I can establish a VPN tunnel as long as I ping the NAT address (the tunnel does not come up if I ping any host on the internal subnet). The issue I am having is that I am not able to ping any hosts on the subnet from either end after the tunnel is established.

Site A outside IP is (Internet G0/0 is

Site B outside IP is (Internet G0/1 is

Site A and Site B can ping each other outside IP.

Site A inside subnet is and is NAT to

Site B inside subnet is and is NAT to

 Simple nework diagram


ASA Site A:

ASA Version 9.7(1)4
interface GigabitEthernet0/0
nameif outside
security-level 0
ip address
interface GigabitEthernet0/1
nameif inside
security-level 100
ip address
object network obj-siteA-real
object network obj-siteA-map
object network obj-siteB-real
object network obj-siteB-map
object-group service ogs-srv-icmp
service-object icmp echo
service-object icmp echo-reply
service-object icmp traceroute

access-list acl-outside-in …
We have web servers in our production environment.  Sometimes as part of troubleshooting, a web server may need to have the IIS app pool recycled or a particular Windows service restarted. Currently only ops staff can do this because they have full admin rights and can remote into the server.

Is there a tool that we could use to allow other staff to perform these limited functions, without giving them remote desktop access and full admin rights to the web servers?
I have a VMware environment with View Personas that works for most users where it will create two folders, one with their username and the other is the V2 folder. This works for most users, but I have a couple that for some reason it does not create a profile folder. I cannot seem to figure out what is different from their account to make it so it doesn't create a profile folder. Can someone guide me in troubleshooting these accounts?
Hi, I've noticed all our access switch interfce LEDs blinking rapidly which suggests there's a broadcast storm going on, the switches are all Cisco and mainly 2960X, there are two stacks formed with 4 switches each and three other standalone access switches together with six storage and server switches.

Any ideas on the best way to analyse and identify the cause (without disconnecting cables as this is a live environment).

I am currently troubleshooting an issue with a new server  hosting an application service which is using Oracle Weblogic accessible through a "https" url by other devices on the network.

The problem is when devices running the client application which connects to the https url, the speed is so slow it causes time-outs when syncing data. This is more evident when downloading the runtime client application files directly from the server using that link, the download speed is running at 20/kbps per second (and this is a local network device).

I resolved the problem once by dis-connecting the internet for a few seconds and re-connecting it, which fixed the problem for a few days. But the speed seems to getting progressively slower, and restarting the router is no longer having any affect.

I'm not sure how to even begin to diagnose this issue as I'm used to running ping tests to measure latency issues, but in this scenario Pings to the server are within perfect range. Copying files from the SMB shares are at Gigibit speeds, and server resource consumption is marginal. It's just anything to do with the local https link.

Any thoughts?
We have several MacOS devices running Mojave that are having trouble staying connected to our AD Domain. These machines are bound and join AD successfully at first. We are able to login with domain credentials, however, after a while, these machines will stop authenticating domain credentials. We have 3 locations that are all macos devices and the other 2 locations do not have this issue, only this one location.

All 3 locations share the same ad domain but each site does have its own domain controller.

Any advice on troubleshooting steps to see why this one location keeps "losing" its authentication to AD?
I have a client with a Surface Pro LTE (model 1807), Win 10 Pro, 8 GB RAM, 256 GB SSD.

After he wakes the Surface from sleep, the Type Cover is completely unresponsive. He needs to log in using the onscreen keyboard. The keyboard only becomes active after he logs in.

I've tried the following:

1. Uninstalled and reinstalled Surface Type Cover in Device Manager (checked the box to Delete Software) before rebooting

2. Updated to the latest Windows (1809 when the issue was reported)

3. Applied all available cumulative and firmware updates in Windows Update

4. Tried a different, brand new keyboard

5. Downloaded all available Surface updates directly from Microsoft

After none of the above steps worked, I swapped him over to a new, identical Surface LTE. I imaged his original device via Clonezilla before transferring it to the new one.

He reported that the issue is persisting even on the new one, which suggests to me that the issue lies in something with his system configuration.

Just wondering if anyone could advise of any additional troubleshooting steps to be performed?

Any assistance would be greatly appreciated.
Troubleshooting step, advice for Server Freeze or Hang issue, is that compulsory to enabled full dump on new setup operating system as practice?
We have an issue after standing up a hybrid solution. Only on-prem users can see online users and send messages. Does not matter if they are local to network or coming through Edge server on guest network. Online users can only see other online users, cannot send or reply to on-prem users. Both sides are open federation. Federation partner test passes. All users are synced with AADC with Skype attributes enabled. All local, tenant configuration settings, DNS entries doubled checked by multiple people. Edge server running in DMZ with dual NICs with F5 acting as reverse proxy. Wondering if someone could point us to where we need to go next for testing, troubleshooting to get this resolved.
We've been having problems with an SBS 2011 server recently.  People weren't getting the logon script to get the mapped drives, and if they tried to get to shares, they were prompted to login again (it's a domain).  Then they get the shares

After some troubleshooting, it was because NetLogon wasn't started.  We can manually start netlogon (which is set to automatic) and everything is fine... till a reboot and netlogon doesn't start.

Looking around for info on that issue, it talks of making sure it's set as a dependancy to Lanman server and lanman workstation.  and to make sure those are set to automatic.

Uh, I don't see those listed in services at all!

And running dcdiag for the netlogon issue, also pointed ot windows time service not started / the server not advertising as a valid time server.

Any thoughts on, most pressing - getting netlogon to start (and should lanman server and lanman workstation be in the list of services in computer management?

and maybe something to get me started with windows time?

I saw a batch script to help resolve that:

net stop w32time
 w32tm /unregister
 w32tm /register
 net start w32time

but now, after a reboot, I manually start netlogon successfully.  Then look and windows time is not in the server list.  

if I run w32tm /register, I get  windows time in the services list.  I change login from local account to local system account.  Then start it manually, I get error 1709 account specified for the service is …
I am troubleshooting an issue with email flow in Exchange 2013.  I have enabled PipelineTracing and all parameters
Set-TransportService Mailbox01 -PipelineTracingSenderAddress
Set-TransportService Mailbox01 -PipelineTracingPath "F:\Anti-Spam_Agents_Log"
Set-TransportService Mailbox01 -PipelineTracingEnabled $true 
Get-TransportService Mailbox01 | Format-List PipelineTracing*

Open in new window

With the last command it reports all is configured correctly but... when I send an email from the mailbox nothing is written to the output folder.  I can't see any details of required folder permissions (set it to everyone FC as a test but no change) for Exchange to write to the chosen output folder,

Any suggestions

Late edit - I also stopped and restarted ther Transport and MBX Transport Delivery services just in case
We have a Cisco 2921 ISR connected to a 500Mbps ISP line for Internet.  Also, it is running a DMVPN to the main office.  Both Outside and Inside interfaces are connected Full Duplex, 1Gbps.

People are complaining, at times, of slowness.  When I check the router it doesn't appear to be overloaded.  There are, however, a lot of input errors.

A person at that site mentioned that the router we are using only has a 50Mbps throughput.

I am not sure where he got that information, but when I do a speed test it I get a around 350Mbps download and 100Mbps Upload.

Any ideas on troubleshooting?
Issue in Brief: Unable to add node back to the cluster.

Details of the issue: We noticed that one of the nodes in the two node cluster(node & disk majority) is 'down' in FCM.  However, we're able to ping it from another node and also RDP into it.

Troubleshooting Performed:
-Tried to evict and re-add the problematic node to the cluster, but unsuccessful in doing so - both via. PowerShell and via. GUI.
-Also rebooted the node, and performed the above operation.  Still no luck.
  Error: Unable to successfully cleanup.
-Applied "Clear-ClusterNode" and it was successful.
-Then, tried to re-add the node but received the same error, but through GUI & PowerShell.
-Rebooted the problematic node; still getting the same error.
-Upon further investigation, we noticed that  the "CLUSDB" was missing in the registry of the problematic node.
-Copied the database to the problematic node (from the other node), and tried to load it in the registry, without success.
-Then copied the "CLUSDB.blf" file to the location, renamed it to "CLUSDB" and tried to add the node again.  Still getting the same error.

-Looked into AD, and found the appropriate CNO for the cluster, and VCOs of its corresponding nodes.

-Noticed below error in the cluster logs as part of our investigation.

"New join with n2: stage: 'Authenticate Initial Connection' status HrError(0x80090301) reason: '[SV] Authentication failed'"

-Did a "portquery" on the other node, from the problematic node and it …
I have a customer on a Synology 916+ with Cloud station Sync.  Laptop isn't getting ALL of the files.  So, customer gets frustrated when he goes on the road to find that the files he posts on the server aren't showing up on the laptop.  The agent doesn't continue syncing and believes that it's finished syncronizing.  I've seen complaints on the Synology forum with no specific answers.

Anyone have experience with this problem?






Troubleshooting is a problem-solving process of evaluating faults that occur in a mechanical or electronic system. Steps often include recreating the problem and then trying alternative and creative solutions in order to fix the situation. Troubleshooting is deployed when software or hardware are rendering abnormal responses or remain unresponsive.

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