How To Uninstall Updates with CMD

1. Go to CMD.

2. Find all updates with this command:

wmic qfe list brief /format:table

3. Using HotFixID from previous step uninstall it:

wusa /uninstall /kb:HotFixID

For example:

wusa /uninstall /kb:4539601

How to delete stubborn item in Outlook

If you are unable to delete an item in Outlook, try the following steps:

How to Enable RDP remotely with psexec

Here are the steps to enable remote access to a computer:

1. Download the Psexec command line tool from: https://docs.microsoft.com/en-us/sysinternals/downloads/psexec

2. Use Psexec to enter the computer you want to access remotely: psexec \\CompName CMD

3. Check the firewall status. If desired, disable the firewall with the following command: netsh advfirewall set currentprofile state off

4. Enable remote desktop protocol (RDP) by adding a registry value: reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server" /v fDenyTSConnections /t REG_DWORD /d 0 /f

5. Remote access to the computer is now enabled.

Windows update errors

If you want to update your Windows computer and are experiencing errors, there are ways to overcome the obstacles.

Error 80072EE2 / 80072eFD
check connectivity to WSUS by port 8530 or connectivity to Microsoft update site.

In addition, if you are using BatchPatch, error 102 also witnesses about lack of connectivity.

Error 80070070
free up disk space.

Error 80092004

If you want to receive future security patches 
install kb4474419 from:

https://www.catalog.update.microsoft.com/Search.aspx?q=kb4474419

or

install kb4490628 from:
https://www.catalog.update.microsoft.com/search.aspx?q=kb4490628

Here is the explanation:

https://windowsreport.com/kb4474419-kb4490628-kb4484071/

Direct download links

We're adding the /quiet /norestart switches to prevent the operating system from restarting your computer after installing the update

Error 80080005
To work around this problem you need to modify registry:

Locate the following registry subkey:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session Manager\SubSystems

By default, the Windows entry in the subkey has a value that is similar to the following:
%SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,3072 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ProfileControl=Off MaxRequestThreads=16

Locate SharedSection and add 512 to SharedSection.

The newly changed Windows entry reads as follows:
%SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,3072,512 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ProfileControl=Off MaxRequestThreads=16

Error 8024000E
Install update KB947821

Find authenticating Domain Controller for your computer

Here's how you can find out which domain controller your computer is getting authenticated with:

gpresult /r

SET L

echo %logonserver%

nltest /dsgetdc:

gpresult /r /scope:computer

=VB Script= Set objDomain = GetObject("LDAP://rootDSE") strDC = objDomain.Get("dnsHostName") Wscript.Echo "Authenticating domain controller: " & strDC

Which DCs are there in the domain?

NETDOM QUERY PDC

NETDOM QUERY DC (Lists all DC’s in domain)

NETDOM QUERY FSMO

RPC/WMI Troubleshooting

Reasons for RPC and WMI errors

1. File and printer sharing disabled

2. Network connectivity issues

3. Name resolution issues. Always check that your problem is not on a cluster using several IP addresses.

4. Firewall blocking.

5. Registry corruption

Two best iT administrator friends

Hyena - very convenient tool for managing Active Directory and not TOO expensive too.

BatchPatch - very usable and well created tool for actively managing WSUS and for a bunch of other uses with or without Active Directory.

Hyena + BatchPatch + Excel = Super-tool for nearly every need. If you have used PowerShell for your administrative needs it is very possible that you may forget about using it... for about 90%.