Faced a strange issue from last few weeks that internet and Network access suddenly stopped working in some systems

Issue:

Faced a strange issue from last few weeks that internet and Network access suddenly stopped working in some systems windows 7  (specially Optiplex 780 ).
Error Message:  If you run "troubleshooter" will tell you "The Wired Network adapter experiencing some problems"

Description: 
Troubleshooting done till now  
·         1. like disabling/enabling/reinstalling drivers
·         2. Updating  the Network drivers in Compatible mode
·         3. Tried some commands on command prompt like netsh to make it work but no success.
·         4. Changing network cable/port.
5.   5. Resetting TCP/IP stack
      6. Restarting DHCP , DNS services
      7. Disabling Anti Virus
      7. Under Device Manager>Show hidden devices>Uninstalled Antivirus driver >windows firewall driver
8    8  Created on "Envoirement Variable" with something like below to show un hide drivers which are installed sometime but not connected >Un-install those drivers as well but no success
Resolution:  Finally we uninstall Symantec Endpoint protection and it started working fine  and then re-install back and its working fine now.

Reference:  http://www.online-tech-tips.com/windows-7/windows-7-cannot-connect-to-internet/

Comments

Post a Comment

Popular posts from this blog

Enterprise CA option is greyed out / unavailable

Many times, when installing Active Directory Certificate Services they cannot choose to install Enterprise Certification Authority, because it’s unavailable as in following picture: Well, you need to fulfill basic requirements: Server machine has to be a member server (domain joined). You can run an Enterprise CA on the Standard, Enterprise, or Data Center Windows Edition. The difference is the number of ADCS features and components that can be enabled. To get full functionality, you need to run on Enterprise or Data Center Windows Server 2008 /12/R2/ Editions.  In order to install an Enterprise CA, you must be a member of either Enterprise Admins or Domain Admins in the forest root domain (either directly or through a group nesting). If issue still persists, there is probably a problem with getting correct credentials of your account. There are many thing that can cause it (network blockage, domain settings, server configuration, and other issues). In al...
Read more

Rearm the Office 2013 installation

Image
There is a 25-day grace period from the time of installation of Key Management Service (KMS) clients before notifications to activate are displayed to the user. If you want to deploy an image, you must rearm your Office 2013 installation before you capture the image. If you do not rearm, users see notification dialog boxes at the time that the image is deployed, instead of 25 days after deployment. The 25-day grace period gives ample time for a KMS host to be found and activation to succeed. If activation is successful, users do not see notifications to activate. Rearm the Office installation Rearming does the following important tasks: Resets the grace timer to 30 days. Freezes the grace timer until either an Office application is run, or the ospp.vbs script is run. Resets the client computer ID (CMID). This is important because the KMS host uses the CMID to determine the num...
Read more

MP has rejected registration request due to failure in client certificate

Image
Issue:- We have System Center Configuration Manager 2012 R2 deployed on Windows Server 2008R2 host. Recently we have moved our Certification Authority to Windows Server 2012 , renewed Root CA Certificate and intermediate Certificates also migrated Hashing algorithm from 'sha1' to 'sha2'  . New Root CA and intermediate CA also present on client machines and on SCCM. However, i have discovered these errors on MP: MP has rejected registration request due to failure in client certificate (Subject Name: ) chain validation. If this is a valid client ,  Even though Newly imaged machines are getting SCCM client installed but won't see all the client cycle under 'Actions tab' and also  'client certificate shows "None".  The operating system reported error 2148204809: A certificate chain processed, but terminated in a root certificate which is not trusted by the trust provider.  Solution:- Register  new Certificate of Root CA    under SCCM20...
Read more