Problem Description: You will find that some Dell, HP and Lenovo laptops will face intermittent Internet disconnections. Sometimes Wi-Fi disappears from notification tray, and you will have to restart the laptop to reconnect to network. This issue doesn’t appear on all Wi-Fi networks. I have seen users stating it works perfectly fine on home Wi-Fi and they face issues in office only. If you carefully check for events under Windows Event viewer you will find events “Has determined that the network adapter is not functioning properly.” or “Has encountered an internal error and has failed.” Pleas ..read more

Problem Description: If you are installing .Net Framework 3.5 (includes .Net 2.0 and 3.0) on Windows 10 or Windows 2016 server, you may encounter this issue. If you download offline installer or use DISM commands for .Net Framework, Windows still considers it as a feature and always try to enable it from Windows Feature. Solution: Windows considers .Net Framework as a feature and hence it tries to use Windows Update services to download the files needed for installation. If this package is not approved on WSUS, Windows cannot download the required files and hence in the download process it thr ..read more

When you try to access shared folders created on Windows machine using java based program you may encounter an error Failed to connect hostname/IP Address or if you try to connect the shared folder with IP address the error could be Failed to connect 0.0.0.0<00> Description: The issue occurs because JAVA program makes call to Windows machine to access the shared folders using SMB V1/CIFS file sharing protocol and if that feature isn’t installed on Windows machine then Java will throw an error. Resolution: To resolve the issue just install the SMB V1/CIFS file sharing on Windows machine ..read more

Problem description: It generally happens when the Java program that you are running is unable to trust the SSL certificate assigned to the application URL. Reason could be- you are using SSL certificate issued by your internal CA or it is self signed SSL cert or the cacerts file is not updated one. Resolution: Follow the steps mentioned below to resolve the issue. a. Locate the cacerts file, generally it is inside “jre\lib\security” under your JAVA program, copy it to somewhere else like c:\temp and then add your SSL cert to this file. See the command below- keytool -import -trustcacerts -key ..read more

You get the error “Location not available” Access denied, when you try to access any drive except C: on your Windows 10 machine Even if you take ownership of drive and give proper security permissions you still get same error. Solution: Excluding C drive all the other drives are treated as external/removable drives by Windows OS and hence it prevents the access to the drives. Even you cannot see size of the drives when you see them in My Computer (explorer) however you can see size and permissions from Computer Management- Disk Management. Make sure local Administrators group has ownership of ..read more

Problem description: It generally happens when the Java program that you are running is unable to trust the SSL certificate assigned to the application URL. Reason could be- you are using SSL certificate issued by your internal CA or it is self signed SSL cert or the cacerts file is not updated one. Resolution: Follow the steps mentioned below to resolve the issue. a. Locate the cacerts file, generally it is inside “jre\lib\security” under your JAVA program, copy it to somewhere else like c:\temp and then add your SSL cert to this file. See the command below- keytool -import -trustcacerts -key ..read more

When you try to access any drive except C: on your Windows 10 machine you get the error “Location not available” Access denied. Even if you take ownership of drive and give proper security permissions you still get same error. Solution: Excluding C drive all the other drives are treated as external/removable drives by Windows OS and hence it prevents the access to the drives. Even you cannot see size of the drives when you see them in My Computer (explorer) however you can see size and permissions from Computer Management- Disk Management. Make sure local Administrators group has ownersh ..read more

When you try to stage patches or re mediate ESXi host you get this error- cannot stage patch to ESXi host. Also if you stage some selected patches it may allow you to stage the patches and remediate the host. Workaround: I couldn’t troubleshoot the issue and hence posting a workaround that I used to remediate the hosts. 1.a. Install Powercli on Windows machine 1.b. Download latest build from vmware site https://www.vmware.com/patchmgr/findPatch.portal?src=vmw_so_vex_fgreh_24 1.c. Add-EsxSoftwareDepot .\ESXi670-latest_build.zip 1.d. Get-EsxImageProfile | ft -AutoSize 1.e. Co ..read more

When you login to vCenter web client you do not see any inventory under Hosts & clusters. Also after login you will see error message- could not connect to https://vcenter.fqdn.domain:443/sdk Solution: When I went through logs, I found it was issue related to disk space. Please follow the steps mentioned below. SSH to your vCenter appliance Give the command mentioned below cat /var/log/vmware/vpxd/vpxd.log | grep error Result: error vpxd[35537] [Originator@6876 sub=vpxdVdb] Insufficient free space for the Database (used: 95%; threshold: 95%) If you have similar logs entrie ..read more

Problem Description: When you see network properties you may find red question mark on Ethernet connection with message “Authentication Failed” This issue occurs because your Windows machine is either trying to use 802.1X authentication and network device on the other end (switch or DHCP Server) is not compatible with it or the network device is demanding 802.1X authentication but your machine is missing the required configurations. Solution: You can stop “Wired AutoConfig” service on affected machine, change the startup type to manual and see if your machine gets an IP address. Pleas ..read more