Nessus Findings: Disable weak protocols and cipher suites
I am remediating the Nessus findings relating to weak protocols and cipher suites. Basically disabling TLS 1.0 protocols and 3DES-CBC3 cipher suite. This will serve as a note for me…
Nessus scan: Symantec Endpoint not disabling Windows Defender Antivirus
I use Symantec Endpoint Protection as AV in my environment. It should automatically disable Windows Defender Antivirus but it did not. Nessus started flagging since I do not update the…
Windows Admin Center(WAC): WinRM cannot complete the operation
I am in the process of migrating file server from Windows Server 2012 R2 to Windows Server 2019. Previously I used Robocopy for this purpose. Windows storage migration is a…
SharePoint 2016 Outbound SMTP Failures
Although users did set alerts on library or folders, they were not able to receive any alerts. Basically outgoing mail failed from the SharePoint server. One of the errors was…
Updating/Changing DNS IPs in VMware vCenter Appliance and ESXi hosts
If you try to change / update DNS IPs on the ESXi host from within the vCenter , it will give an error " This operation cannot be performed while…
Folder Redirection migration and GPO not working
I have been testing folder redirection migration from Windows Server 2012 R2 to 2019. Problem: Although GPO was modified to point to the new server, it still pointed to the…
Users unable to download Offline Address Book
After migrating Exchange 2013 to Exchange 2019, users started complaining that they were not able to download Offline Address Book(OAB). When trying to manually download Offline Address Book from Outlook…
VMware ESXi: Unable to take snapshot after upgrading to ESXi 7.0
Background: Earlier this month I upgraded my production VMware vSphere environment from 6.7 U3 to 7.0.0. All the hosts in the cluster are HPE DL380 Gen10 server. I used HPE…
Exchange 2013 Back Pressure Issue
Exchange Back pressure is real. I have setup two separate domains in my lab (northwindtrader.com and constoso.com). On northwindtrader.com domain I am testing migrating Exchange 2013 CU21 to Exchange 2019.…
Not able to login to Outlook/OWA and Exchange 2013 CU21
Outlook/OWA will prompt for password but will not authenticate.On Exchange Server security event log:Event ID: 4625, user login failure. Unknown username and bad password, User not allowed to logon at…