Showing posts from January, 2016

How Symantec disabled Corporate Wifi on some of the machines.

Issue - Today , some laptop users started reporting as they are unable to connect to corporate wireless after System Center Endpoint protection(SCEP) installation took place. I found, most of the laptop users were having this issue.  Troubleshooting done - I immediately uninstalled SCEP but that didn’t help , tried removing Wi-Fi profiles under the path ‘C:\ProgramData\Microsoft\Wlansvc\Profiles\Interfaces\Interface’ but that didn’t help too.
Error- When checking event viewer, the only error that showed up is as follows 5 times in a row.          “Error skipping EAP method DLL path name validation failed. Error: typeId=25, authorId=0,vendorId=0,vendorType=0”, This error indicates a registry or missing corrupt file issue.
EAPHost is a Microsoft Windows Networking component that provides an Extensible Authentication Protocol (EAP) infrastructure for the authentication of following protocols such as802.1XandPoint-to-Point(PPP).
Cause - Symantec didn’t uninstall properly caused this issue.

Error message when you try to install a SQL Server 2008/2008 R2 SP3: “The NT service 'MSSQLSERVER' could not be started

Issue - We encountered an issue while working on a SQL 2008 R2 SP3 Installation. While running SP43 setup files suddenly a window populated with message.
Error Message – “SQL Server has encountered the following error: The NT Service: MSSQLSERVER could not be started, error code 0x884B20001”

Troubleshooting done – 1.Some blogs were suggesting, it’s a permission issue, immediately we logged in to the server with different admin account and tried to install SP3 but it threw the same error. 2.When we checked the “installed updates” under “programs and features”, we found that SP3 got installed. We tried to remove installed components of service pack 3 but again it was giving “Access Denied” error. 3.We tried to repair SQL instance but again we came across “Access Denied” error. 4.We checked the summary.txt (C:\Program Files\Microsoft SQL Server\100\Setup Bootstrap\Log) and observed following logs:

Final result:  The patch installer has failed to update the following instance:. To determine the…