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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Recenly we received call from our client said that network down and we visit onsite found that is looping .

She buy two unmanage switch try to connect by her self ,we found out she connect one of the cable back to the switch .

Actually they have are using HP 5130 as the core switch and all the access switch is HP/Aruba 2530.

I would like seek for expert advice ,what we can help them to avoid this problem occur again.
Good Morning Experts,

Mary Doe has publishing editor permissions to John Doe’s calendar.  She recently cancelled an appointment she created on his behalf, however, we have been unsuccessful in deleting it from her calendar.

The meeting attendees are also receiving several cancellation notices.  These seem to be sent sporadically, as the most recent was sent out yesterday, and Mary has not been sending them out.  

Last week, I was remoted into Mary’s computer to try and resolve the issues with this appointment.

I did a repair on her Outlook profile, removed her Outlook profile, tried to delete the appointment via webmail, and was not successful.

I also RDP into John’s computer this morning and did a repair on his profile, removed his profile, and also checked on Mary’s permissions to his calendar.

Everything seemed to be in order on his end.  Could your please look into this further, as I have run out of troubleshooting options?

Please, advise how to stop getting this cancellation meeting notices on user's mailboxes and explain what would happen if there are several scenarios

Provide step by step instructions with screenshots

I have a DFS server which I am decommissioning and have moved all the files from it to a new 2016 server which will be replacing it. I have installed the necessary DFS components and have created an additional folder target in my DFS Manager to the new location.

After I robocopied the files making sure to retain the permissions, I Enabled the new folder target and disabled the original target.

Since that time. I left the referrals to update over a weekend and then tested my dfs structure using dfsdiag. dfsdiag was not reporting any issues with my infrastructure so I thought I was good.

Most of my computers have updated and pulled the DFS Folder without issue, However there are some problem children that are not seeing the new location and instead are defaulting to the old location. This is the same behavior seen when accessing the location though either a mapped drive or direct unc to the DFS folder location.

Please assist me In troubleshooting this issue if you are an expert in DFS
Quick query on a new password policy for a customer 70 users, only 10 have been prompted for password change

This is at applied at default domain policy and domain level (environment is small so default policy has been edited)

Any best way to change password age policy in powershell, gpresult, etc just looking to get this sorted

Appreciate any best troubleshooting steps to look at this
We have one user out of our entire organization that gets the attached pop-up message when she opens Outlook. She is able to simply click "OK" and all can use her email just like everyone else, but this pop-up continues to occur. It has happened for years apparently and doesn't matter what computer or version of Office is installed, the pop-up remains.

We have tried doing everything possible troubleshooting locally but the simple fact that it appears on multiple computers rules that out as a solution. We have a hybrid setup for Office 365 and nobody out of our 500 users receive this message outside of herself. We believe the issue is somewhere on the administrator side of Exchange/Office 365 but we are unsure where since everyone isn't affected. Our next step is to call Microsoft but wanted to try Experts Exchange as a last resort.
Hey everyone -- I originally came to Experts' Exchange to address a bedeviling c0000218 blue-screen error, but the discussion has kind of splintered a bit, so I'm going to open a new question.

In the original question, the consensus seems to be that the Ultimate Boot CD for Windows (UBCD4Win) is the best method of repairing the registry error which is preventing me from booting my computer. The original source for the program is now defunct, but it still exists around the Internet largely as freeware. Though I'm convinced that the program may end up doing the job I need, it's been a bedeviling journey just to create the necessary file(s) to carry out the process. Several attempts to create or use the program have not ended successfully so far, and I'm at wits end to understand why. I will detail one of the more recent attempts below; to follow some of the previous attempts, start with this comment on my other question; you could work upward or downward from there, I guess.

After a recent failed attempt to build an .iso file from the program, I took a closer look at the log and found a pair of errors which caused the build to fail. As suggested by another forum user who commented on my update to the original topic, it turns out that the Windows XP operating system I'd been using to facilitate the build was corrupted by a couple of missing registry files, as the image below will show.
errors-found-in-UBCD4Win-BuilderSince I'd already had some success by
I'm troubleshooting a VPN connection using checkpoint.  I keep getting dropped out from time to time.  Here are the logs from the checkpoint firewall
[28 Oct 7:13:54] IKE tunnel disconnected, error code=-1000. Reason: Site is not responding.
[28 Oct 7:13:54] Client state is connected
[28 Oct 7:13:54] Tunnel (2) disconnected. State is connected. Trying to reconnect.
[28 Oct 7:14:22] IKE connection failed, error code=-1000. Reason: Site is not responding.
[28 Oct 7:14:22] Client state is reconnecting
[28 Oct 7:14:22] Reconnect failed. trying again (2)
[28 Oct 7:15:20] IKE connection failed, error code=-1000. Reason: Site is not responding.
[28 Oct 7:15:20] Client state is reconnecting
[28 Oct 7:15:20] Reconnect failed. trying again (2)
[28 Oct 7:16:05] IKE connection failed, error code=-1000. Reason: Site is not responding.
[28 Oct 7:16:05] Client state is reconnecting
[28 Oct 7:16:05] Reconnect failed. trying again (2)
[28 Oct 7:16:23] IKE connection failed, error code=-1000. Reason: Site is not responding.
[28 Oct 7:16:23] Client state is reconnecting
[28 Oct 7:16:23] Reconnect failed. trying again (2)
[28 Oct 7:17:02] IKE connection failed, error code=-1000. Reason: Site is not responding.
[28 Oct 7:17:02] Client state is reconnecting
[28 Oct 7:17:02] Reconnect failed. trying again (2)

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Can someone get me started on the troubleshooting?  What is happening and how can I fix?
So I have a client with a couple of Apple MAc's for the design team. They have two identical HP CP5520 Colour LaserJets, even built in the same month, same firmware, etc. One of the Mac's can print to one of them and not the other. Just hangs at "Printing - Connected to Printer" until eventually it pauses the printer. I have tried both via "Secure AirPrint" and the other driver listed which I assume is Jet Direct. Both methods work fine with the other printer.

I have compared every web manage page and cannot see any differences other than, and this sounds completely irrelevant, in the General Troubleshooting page, one of the pages auto-hides the options for the paper path test, and the other doesn't.

Very confused. Off to find out how to turn the CUPS web interface on to see if that tells me anything.
On my Windows 10 homer system my Quark XPress 2017 is crashing on launch and I am not sure where the logs are located to start troubleshooting. Can you point me to the logs location?
Windows 10 Pro - Windows Update error 0x8e5e0147 consistently failed. This is for feature update on KB4462919.  Microsoft clues also fail.   Standard troubleshooting goes through the iterations all to no avail.  DISM and sfc /scannow completed, but continues to fail.  None if these routines appear to resolve the issue.  I've uninstalled all unnecessary apps and have plenty of storage and memory.

Don't want to do any Windows reinstall processes, too many old apps needed that I can't reinstall.  Not urgent, but perplexing for a couple of weeks.  Any ideas?

Thanks a ton,":0)  Asta
Hi Experts,

since yesterday we have some strange issues with WIN10 machines.
When the user logs in, the screen is black and you cannot click anything.
We have checked the monitors and cables, all ok.
Do you have any infos about this ?

When I check the services from this machine, I can see a lot of services are in starting modus.
See the screenshot.

starting services
NEC SL2100 phone system started behaving poorly a week ago Sunday.  Rebooted all network equipment, and nothing changed.  Reboot the phone system and everything worked for about 20 minutes.  Same cycle of events, about same time frame.  Next checked all network equipment for firmware upgrades.  Wireless bridge Engenius EnStationAC went from 2.x to on both sides successfully.  Problem returned yet again, but now a delay in getting dial tone of about 3-10 seconds.  If phone hangs up and connects immediately, no delay happens.  A monitoring computer is the only non-phone device on the entire voice network.  It shows random packet loss to phones.  The phone problem was originally they begain restarting at random.  They are not all happening at one time.  The delay never happens to VOIP phone on the system side of wireless bridge.  Engenius has yet to comment on the issue.  One phone (Only one phone) peforms IGMP actions accoring to Wire Shark.  Removing that specific phone solved the problem for almost 2 hours.  Yet it eventually returned.  All the time I have brought another laptop in for testing and moving it to both sides of the bridge.  If I am on the system side, I perform ping tests to the phones on the far side of bridge.  If I am testing the phone system resources, I am on the opposite side of bridge.  I perform around 1,500 packets to 3 devices simultaneously each time I test.  No latency or packet loss ever.  I have introduced a new PoE switch on the system …
Accessing C$ on the network:

I have various reasons for needing to do this.  
One has to do with testing / confirming / troubleshooting access from monitoring "server workstations" using things like EventLog Analyzer and GFI Languard.

Here is the situation:
Each computer is on a peer-to-peer network and has a common Admin1 User/Password.  The server workstation is logged in with that User.
Using UAC \\[target_ipaddress]\C$ from the server workstation generally works.
But, on some target workstations it does not.
So, the task is to resolve the failures and turn them into successes.

Since all of these workstations have been treated fairly equally regarding file sharing, firewall settings, services, etc. it's surprising when failures occur. and I'm hard pressed to find a solution.  
I keep asking myself "what's different?"  and, while willing,  end up searching rather involved descriptions of things that I probably don't need to investigate in such detail.  

There are other aspects but to be fair to the Experts, I'll ask them separately.
But, in this case I'll add that the workstations are in 3 subnets each in workgroups named identically WORKGROUP - routed together with no NetBIOS traffic allowed; there is no inter-subnet name service.
Yet, the services I'm trying to troubleshoot DO work across all 3 subnets - just not in every target computer.
(In some cases I'm sure that the checklist of things to "fix" to get the monitoring to work is bigger than it …
100% Disk Usage even after refreshing the Dell T5810 PC. Tried performing most troubleshooting guides available in the internet - Disabled Windows Search, Background Intelligent Serivce, Superfetch; Increased Virtual Memory etc. Also checked with Crystal Info Hard Disk which shows the performance as "Good". Updated Dell Softwares, BIOS, Drivers and Windows. The 100% with hard drive is frequent and is disrupting the work of a user. Any suggestions where I might have overlooked in troubleshooting?
Hi guys

I'm working on putting together a technical test to help a colleague in another country in their recruiting process. The candidate claims to have had 9+ years working in Microsoft environment based system administration, maintenance, troubleshooting and support of data centers. This in itself is rather vague. They do claim to have had Level 1, 2 and 3 support in a Windows server environment during the 7years of their tenure.

I've got around 15-20 questions set up already. I was going to ask if it was possible for some of you to throw some technical questions around Active Directory, DNS, DHCP and SAN's. I know this isn't specific to any particular topic which makes it harder. But if you can think of any questions that I could perhaps ask them, then I'll review it. Any help would be great.

Thanks for helping
Hello Experts,

One of my customers is running into an issue where they are unable to mount a mailbox in Exchange 2016 that was disabled by mistake and then reconnected to another user in AD.


Mary Doe's mailbox was disabled for some reason, and the help desk team, instead of reconnecting the disabled mailbox, they provisioned a new mailbox for this user. Once the user check the emails, obviously all email is gone because is displaying only items from this new mailbox.

Company has a test account named John Doe with a mailbox. The mailbox for John's account was disabled, and then following cmdlet was performed to reconnect Mary's original disabled mailbox to John's mailbox

Connect-Mailbox -Identity "Mary Doe" -Database DB100 -User "John Doe"

And the following error was displayed:

The LegacyDN xxxxx is in use by the following user in Active directory: Mary Doe. The value for LegacyD must be unique to each user.

In order to resolve the issue above, they added an extra blank space to LegacyDN attribute in AD for Mary Doe using ADSI edit tool, then ran cmdlet below, and Mary's disabled mailbox was successfully reconnected to John's account

Connect-Mailbox -Identity "Mary Doe" -Database DB100 -User "John Doe" -AllowLegacyDNMismatch

So, we also granted full mailbox permission access to Mary's and John accounts to perform troubleshooting, however we are unable to mount or open Mary's mailbox from John's account using outlook and OWA. Getting …
My client has an HP ProLiant DL160 Gen9 that has started rebooting randomly over the last two weeks, below is the latest bluescreenview which points to ntoskrnl.exe as the culprit however i have no idea where to start troubleshooting.

All applicable windows server updates installed and i also ran a system file check which did resolve some issues however the reboots still occur.

Any thoughts??

SBS2011 getting ready to replace the server, in the meantime DNS resolution is horrible however I'm not convinced it's the server I think it's on the ISP side. When I ping either DNS server from the ISP it has a lag well above 25ms to 35ms. This is not enough though to determine why DNS resolution is so slow and the reason for this post. How to proceed troubleshooting in this case.

SBS2011 doesn't use forwarders but I tried them anyway without any luck. I also added for testing purposes and nothing changed. SBS2011 DNS/DHCP is configure, without forwarders and is using root hints. Firewall is using DNS from the ISP.

Something strange, when I make a VPN connection my resolution is fine. I may not be fully understanding DNS through a VPN connection, my understanding is I'm routed through the server so shouldn't I see the same issues? Note, I'm not using SBS routing and remote access using L2TP on the firewall. Maybe I just answers my question and I'm routing around the SBS2011 Server.

Also upgrade the bandwidth which is nice, much faster but the DNS resolution is still extremely slow and an issue.
I am having issues with my DHCP server having BAD_ADDRESS entries for a large number of addresses.  The Unique ID ends to be the reverse of the IP address in hex form. I have Conflict detection attempts set to 2.  It is only happening on the Scope attached to the secured wireless.  It seems to be about one bad address per minute or so. I've looked at the event logs on that server that I can find and there aren't any that match the time for the Lease.  Any troubleshooting tips?
I am updating a Windows 10 machine from 1607 to 1803. I continuously get the following error:

Windows update could not be installed because of error 2147942487 "The parameter is incorrect." (Command line: ""C:\windows\system32\wusa.exe"

I have run through the standard troubleshooting fixes listed here:

Any suggestions?
I am looking to prepare a template for cisco networking troubleshooting guide. Can someone help and share their layer1 through layer 7 troubleshooting guide or commands or any templates with details. Thank you.
there is 3 static ips on our network that need to be reserved for another device.  when I do a network scan mac address is: 00-01-45-03-ED-B9


Any ideas what type of devices could be?  Is there any other troubleshooting I can take besides looking at every device on the netowork?
each time when I log off and log back on to my virtual desktop  , my outlook signature goes away.

after troubleshooting I see in my signature folder thumbs.db is missing

anything you can suggest
I am trying to automate my keep alive on my router WAN side. I just want to monitor the provider router interface.. Will the IP SLA do the trick (see below)? How do I apply it to the interface? My router is a Cisco 2911 and it does not have the ip sla # command.

ip sla 10
icmp-echo source-ip
frequency 300
timeout 3000

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Windows Server 2012R2

XPS Document writer was removed from the 'Devices and Printers'

While troubleshooting the Feature was also disabled using: Dism /online /Disable-Feature /FeatureName:Printing-XPSServices-Features

I am now unable to 'Enable' the feature. "DISM failed. No operation was performed." (log is attached.)

Step 1. I'd like to get the Feature enabled.
Step 2. I'd like to get the XPS Document writer back to the 'Devices and Printers'

I have scoured about 20 blogs already; everything on this site, Quickbook links, scf scans, Sharing other XPS printers, deleting drivers, copying drivers, windows updates, add/remove Office365, DISM scans.


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.