Error 0xC800021F

It looks like the client datastore failed to initialize.

1. Open a CMD prompt on the client.
2. Type "net stop wuauserv" (without quotes) .
3. Type "cd %Windir%\SoftwareDistribution".
4. Type "RD /s /q Datastore" (this will remove the client datastore).
5. Type "net start wuauserv" (without quotes) .
6. Type "wuauclt /detectnow" then check %Windir%\WindowsUpdate.log if it is successful.

OR, just stop the Automatic Updates Service and delete "%Windir%\SoftwareDistribution\DataStore" folder and start Automatic Updates Service and force the update detection (wuauclt /detectnow)

Error 0x80004002

You see the following errors in "%Windir%\WindowsUpdate.log".

FATAL: Failed to get session from datastore, error = 0x80004002
FATAL: Failed to Unserialize from data store, error = 0x80004002
WARNING: Exit code = 0x80004002
WARNING: InitAUComponents Failed, will restart AU in 30 mins, error = 0x80004002
DnldMgr FATAL: DM:CAgentDownloadManager::CheckAllCallDownloadStates: GetSession failed with 0x80004002.

1. If you have a proxy server -

Stop Automatic Update Service - "Net stop wuauserv".
Run the following command: "proxycfg.exe -u".
Start Automatic Update Service - "Net start wuauserv".
Force update detection and see if that works.
2. Re-create the Datastore -

Stop Automatic Update Service - "Net stop wuauserv".
Rename/delete "%Windir%\SoftwareDistribution" folder.
Start Automatic Update Service - "Net start wuauserv".
Force update detection and see if that works.
3. Try to force install WUA.

Download WUA WindowsUpdateAgent20-x86.exe from http://go.microsoft.com/fwlink/?LinkId=43264.
and run the following command: "WindowsUpdateAgent20-x86.exe /wuforce".

VerifyWUServerURL() failed with hr=0x800710dd

Check in the IIS Manager to see what authentication type is enabled on the directories that are part of the WSUS Server. Windows Integrated Authentication needs to be enabled on the "SimpleAuthWebService", "Content", "ClientWebService", "ReportingWebService" and the "SelfUpdate" folders. After correcting this, all my clients are making successful connections and downloading approved updates, as well as reporting to the server that the client exists and is using the Windows Server Update Services server.

Time sync between server and client

Time Sync between server and workstation following commands
are used

w32tm /config /update
w32tm /resync

Start and Stop using time service using

net stop w32time && net start w32time

Tme server in Windows Server 2003

Time service to use an internal hardware clock

To configure the PDC master without using an external time source, change the announce flag on the PDC master. The PDC master is the server that holds the forest root PDC master role for the domain. This configuration forces the PDC master to announce itself as a reliable time source and uses the built-in complementary metal oxide semiconductor (CMOS) clock. To configure the PDC master by using an internal hardware clock, follow these steps:1. Click Start, click Run, type regedit, and then click OK.
2. Locate and then click the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Config\AnnounceFlags
3. In the right pane, right-click AnnounceFlags, and then click Modify.
4. In Edit DWORD Value, type A in the Value data box, and then click OK.
5. Quit Registry Editor.
6. At the command prompt, type the following command to restart the Windows Time service, and then press ENTER:
net stop w32time && net start w32time

Find duplicate entries in excel

Go to excel -->tools -->macro - visual basic editor then paste the below code and run..

Sub FindDups ()
'
' NOTE: You must select the first cell in the column and
' make sure that the column is sorted before running this macro
'
ScreenUpdating = False
FirstItem = ActiveCell.Value
SecondItem = ActiveCell.Offset(1, 0).Value
Offsetcount = 1
Do While ActiveCell <> ""
If FirstItem = SecondItem Then
ActiveCell.Offset(Offsetcount,0).Interior.Color = RGB(255,0,0)
Offsetcount = Offsetcount + 1
SecondItem = ActiveCell.Offset(Offsetcount, 0).Value
Else
ActiveCell.Offset(Offsetcount, 0).Select
FirstItem = ActiveCell.Value
SecondItem = ActiveCell.Offset(1,0).Value
Offsetcount = 1
End If
Loop
ScreenUpdating = True
End Sub

error number: 0x800c0133” Outlook Express

When you try to send or receive messages using Outlook Express, you may receive error message as below.

"An unknown error has occurred. Account: 'Example', Server: 'example.mail.domain.com', Protocol: POP3, Port: 110, Secure (SSL): No, Error Number: 0x800C0133 "

SYMPTOMS

All the mail disappear
Unable to download emails
E-mail message could not be sent.
CAUSE

This behavior can occur if the Folders.dbx file is missing, damaged, or using the read-only attribute. Usually it will happen at inbox.dbx.

To remedy

Try to restart the computer, if the problem persists, please follow the following steps.

Rename

the Inbox.dbx file:

Go to “Tools” > “Options” > “Maintenance” tab > Click “Store Folder”. It will reveal the location of your Outlook Express files.
Close Outlook Express, goto the location mentioned above. You may copy the location and paste it in the “Start” > “Run” and click “Ok”.
Rename “inbox.dbx” to “oldinbox.dbx” or name that you prefer.
Restart the Outlook Express, This creates a new inbox.dbx file automatically.

Recovery old emails

You may recover back the old emails by try the following, if they are not corrupt or damage.

In Outlook Express, right click on the local folders icon in the folder list.
Click on New Folder, named it to “Old Inbox”.
Search for oldinbox.dbx.
The old emails should be inside the oldinbox.dbx right now.