We see this error typically when there is a network connectivity problem between Windows Update or Windows Defender, and Microsoft’s servers. This problem can occur even when the machine in question has access to the internet, if there is a problem with the windows firewall, erroneous proxy settings, or a corrupted Windows Update database.
For Windows 8, or 8.1, Microsoft has an automated tool that can help check on the status of the database, and in some cases resolve the issue outright. This tool can be found at : Microsoft Source : http://windows.microsoft.com/en-us/windows-8/windows-update-error-0x8024401c
If this automatic tool fails to resolve the problem, attempt the following :
- Open an Elevated Command Prompt
- Type “SFC /scannow” – this will check your windows system files for corruption and repair if possible. If corruption is found, troubleshoot further into hardware failure issues.
- Bring up a control panel, and select internet options
- In internet options, select “connections”. On the connections screen select “LAN Settings”
- Ensure under LAN Settings, the ‘Automatically Detect Settings’ box is checked.
- Hit OK, exit out. Reboot if needed, and attempt to update windows again. Problem should be resolved.
Elevated command prompts are often used to carry out tasks with full administrator rights to your computer. In most cases, you will not want to execute programs with administrator rights, as it opens your system up to security vulnerabilities. Typically you would want to check with your network support professional for help before proceeding with the below.
- Open Start Menu
- In search box, type ‘cmd’
- Right click the CMD program, and select ‘Run as administrator’
- Open search screen, using start menu or ‘Charms’ on right hand side of the screen
- In search box, type ‘cmd’
- Right click the ‘Command Prompt’ program, and select ‘Run as administrator’
As network support providers, we frequently come across come across scenarios where a computer on a business domain has a user profile that has old Offline File Cache data in it. Typically, the user account has moved to a new domain, or is pointing to an old server path, no longer in use. This can happen if the user account has redirected folders enabled on the My Documents or Desktop folders – and the server is no longer in use, or unreachable. This can result in low disk space, or in many cases, duplicate files.
You also may need to delete your offline file cache if you are receiving the error message : “Unable to merge offline changes on \\server_name\share_name. The parameter is incorrect.” in your sync center.
Fortunately, the fix is relatively simple.
Open an elevated command prompt (Start -> type CMD in search box -> Right Click, Run as Administrator)
type : “REG ADD “HKLM\System\CurrentControlSet\Services\CSC\Parameters” /v FormatDatabase /t REG_DWORD /d 1 /f”
Reboot computer – the Client Side Cache will be cleared on your next login.
THIS WILL DELETE ALL CACHED OFFLINE FILES – DATA WILL NOT BE RECOVERABLE, ENSURE YOU HAVE BACKUPS IN PLACE.
Microsoft’s Notes :
Make sure that files are synchronized before you add this registry entry. Otherwise, unsynchronized changes will be lost.
The actual value of the new registry key is ignored.
This registry change requires a restart. When the computer is restarting, the shell will re-initialize the CSC cache, and then delete the registry key if the registry entry exists.
Windoes 7 Reference : http://support.microsoft.com/kb/942974
If you have Windows XP, follow this procedure : http://support.microsoft.com/kb/230738
Windows won’t start after update installation
This is a common problem we run in to while providing IT support with older computers. After applying a Microsoft Update patch, windows will partially boot, or not boot at all. Most of the times, windows will boot to its start screen, with a message similar to the below :
“Configuring Windows updates… 90% complete… Do not turn off your computer.”
This computer problem was a bit tough for us to figure out originally. We had a local IT partner who was getting the blue screen of death when their USB to VGA displayport adapter was plugged in to their Asus Vivobook S400CA laptop computer running windows 8. If we unplugged the USB displayport adapter, no bluescreens.
Moving profiles for the Thunderbird e-mail client is a pretty common task we have to do for support partners who get a new office computer, and use Thunderbird. Thankfully, unlike Microsoft Outlook, Thunderbird profiles are relatively easy to copy over between computers – thanks Mozilla!
Step 1 : Copying over your existing Thunderbird profile.
Thunderbird profiles are stored at : %APPDATA% \Thunderbird\Profiles\<Profile name>\
“Your computer could not be joined to the domain because : An attempt to resolve the DNS name of a domain controller in the domain being joined has failed.”
We run into this error a lot on improperly configured SBS 2008 domain servers. The issue usually has to do with improper DHCP settings on the domain controller – where an external DNS is listed before the domain controller’s IP address in your IPv4 settings. Check that your domain controller is listed as your primary DNS server – for instance DNS settings should look like this on your client computer :