Showing posts with label website loading slow. Show all posts
Showing posts with label website loading slow. Show all posts

Thursday, 8 February 2018

Why is my DNS server not responding? How to fix it?






Once in a while it is expected to get errors like “DNS Server not Responding” when we surf or working using the internet. Internet connection failure happens due to many reasons. Among the various issues one major failure is the 'Domain Name System not responding'. A DNS server is a computer that serves which comprises a database of public IP addresses and their related host names. Mostly DNS serves to resolve or interpret those common names to IP addresses as demanded.
Devises may fail to join the internet if these conditions exist. DNS server errors may appear due to many reasons, for example, a defective internet provider, inaccurate TCP/IP or DHCP services, proactive antivirus software, imperfect router or modem. One by one, network troubleshooting can be used to check and correct the obstacle. Let's start with the simpler ones.

Disable extra unused connections and try with one
It is an established fact that you can use one best network connection if you enable only a frequently used network.

Use Any Other Device with the Same Network
You must recognize the error by checking the network. Connect it to any other system to check your network. When the internet is connected, obtain the same website to check if it is available or not. If it is connected, it indicates that your first system is generating the error.

Solving TCP/IP and DHCP Failures
There is a chance for malfunctioning TCP/IP software inside the operating system of client's device and set its DNS server addresses incorrectly. Rebooting computer often clarifies these momentary flaws. Another method is operating TCP/IP efficiency programs that deliver the standard procedure to "release and renew" the Windows IP address settings.
Thus, a majority of TCP/IP networks use the Dynamic Host Configuration Protocol (DHCP) service to allow IP addresses to clients. DHCP assigns primary and secondary DNS server addresses also. If DHCP is not functioning properly, a PC reboot is reasonably wanted to improve it.
Monitor to secure both your machine and the network router have DHCP qualified. If each end of the connection is not utilizing DHCP, internet connection errors result normally.

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Managing DNS Provider problems
We usually configure our home networks to obtain DNS server addresses from their internet provider automatically. When the provider's servers or network experience an interruption or are massively burdened with traffic, their DNS services can abruptly stop working. Customers must remain until the provider settles those problems before they can use the provider's DNS.
Several free public DNS servers have been established on the internet by Google and OpenDNS. A router manager has an option to switch their network's DNS setup over from a private to a public DNS configuration if they access manually to the public DNS IP addresses into the router configuration settings.
In critical conditions, administrators can choose this tentatively or they can make it a permanent change. Through Network and Sharing Center DNS frames can also be used on the Windows device itself. Normally this will not work as a stable solution as devices get and delete their local settings with these from the router via DHCP. 

Avoiding Internet Blockages from Antivirus Programs
Antiviruses are meant to block trespassing invaders, but they themselves have the capability to hinder internet flow once they detect any misbehaving device.
Maximum antiviruses operate using specific database files that the software merchants automatically update on a regular base. Computer users usually forget when these install updates occur as they are triggered in the setting and devised not to interrupt standard work.
Sometimes data updates cause confusion making the antivirus program to consider it as malware which is going to affect the computer. It makes a false alarm or false positive test. This, in turn, makes the windows to show a DNS server not responding error message.
To check whether or not it is a virus, pause the programme temporarily and restart the Windows Network Diagnostics. After confirming the issue you can ask the antivirus merchants a new update or you can seek a technical support. Never take antivirus disabling as a permanent solution as it is not safe.

Recover or Replace a Malfunctioning Router or Modem
A bad broadband router or modem may become a reason to show the DNS not responding error messages. Mostly restarting the router or modem will correct the issue. If the problem is persisting then it is advisable to renew.
It is very unlikely for both to fail that would cause DNS errors. Failed routers and modems usually cannot power or else cause errors related to the underlying network connection.
Now, try to access the website you previously was checking and see if it works. With the above solutions, the DNS server not responding error should be fixed. If you have any further obstacles, comment below and we will discuss it.

Wednesday, 22 November 2017

How to Troubleshoot Slow Windows Server Performance?

Windows Server is one of the efficient and most widely used operating systems developed by Microsoft. Certainly, there are some tips to keep your server humming in the windows infrastructure.
The primary phase of resolving a problem has to be monitoring in detail. A commonly used way for monitoring is to use the great tool “Windows perfmon” effectively but should not be used in Windows 2008 R2 as there is a lack of possibility of saving your settings. Try to achieve a single goal comprehended with all the possible counters needed, with a suitable duration in combination with the suitable configuration of sample values, thus equipped to use on multiple servers. Also, focus on resolving the startup issues and utilize performance advisors. Automation of some tasks which has to be performed regularly accelerates the windows server performance to a great extent. This includes:   

 Efficient DNS management
A well-managed Domain Name Systems always possess an efficient performance. Rather than manually working with zone files or the DNS interface, make use of the cluster of tools available to automate most of the processes dealing with DNS.

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Cleaning up Active directoryActive directory gets summed up with non-existent machine references, expired users and full of other junks which never gets cleaned up. Keep the AD tidy by cleaning it up the AD at regular intervals utilizing a number of tools which automate the work.

Automating disk defragmentation
The server gets overloaded with time as a plethora of applications are installed. The System Administrators have to run Disk Defragmenter on a regular basis with the aid of Windows Task Scheduler. Routine defragmentation ensures sequential storage of data blocks in preference to random locations, upgrading overall file-reading efficiently.

Adjust server response
Adjust the server to optimum in order to prioritize the applications running in the background since server applications are not executed from the server console.

Administering an exclusive drive for pagefiles.
As pagefiles are used frequently by Windows, it is highly suggested to place it on a dedicated drive. This assures that your server has a primary access to pagefile data.
Employ New Technology File System (NTFS) being the most secure file system.
Transaction-based (possess security and speed improvement)
Avoid Running 16-bit apps
Running 16-bit apps reduce Windows server performance as independent multitasking models are used for 16, 32, and 64-bit applications.

Set up your Power Plan
Optimize the power plan for Windows Server to attain maximum power efficiency based on the role of the server along with application requirements. It actively increases or reduces the CPU performance while workload changes thereby matching computational capacity to computational demand.

Solving the named pipes puzzle
Invisible pipes are used for communicating with other servers. Interact well with them for transparency of procedures.

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Explorer folder options
Some common configurations used for a better performance are mentioned below:
Uncheck “Hide protected operating system files”
Uncheck “Show pop-up description for folder and desktop items”
Uncheck “Show preview handlers in preview pane”
Uncheck “Use sharing wizard”
Uncheck “Display file size information in folder tips”
Check “Show hidden files”
Uncheck “Hide empty drives”
Uncheck “Hide extensions for known file types”
Check “Always show menus"
Disable IE Enhanced Security Configuration, at least for administrators, for a better performance.
"Internet options mentioned below are recommended for better server performance.

Launch IE, and configure first-time run options
Set Home Page (set to blank or other)
  • Uncheck “Advanced – Enable page transitions”
  • Uncheck “Advanced – Reuse windows for launching shortcuts”
  • Uncheck “Advanced – Show friendly HTTP error messages”
Hard Disk Compression
Despite the introduction of Cloud, hard disk compression enhances server performance by reducing the time taken to read files from the hard disk. It generally becomes applicable when running a disk-based app which depends on a large number of individual files.
  • Disable the Shutdown Event Tracker which is certainly not much necessary for the expected level of performance.
  • Turn On SuperFetch which makes the OS more responsive only after making the necessary registry changes.
  • Uninstall the Rarely-accessed Utilities and Disable the Rarely-used Services
  • This, besides increasing the server performance, enhances security for your systems runs on a reduced number of services. The overall vulnerability of the server is thus reduced.
  • Using Microsoft's File Server Migration Toolkit, Windows server tuning template also helps to achieve the desired performance.
All the above-mentioned practices collectively equip you to troubleshoot slow windows server performance.