How to fix Windows Update Errors Part 1
Before doing anything else to isolate the issue please do the following first... Click here for part 2
1. Log on as an administrator
Windows 8.1 and Windows 8
Note The steps that you should follow will vary, depending on whether your computer is a member of a domain or is in a workgroup. To determine whether your computer is a member of a domain or is in a workgroup, see "To check if your computer is in a workgroup or domain" in What is the difference between a domain, a workgroup, and a homegroup?
My computer is a member of a domain
- Swipe in from the right edge of the screen, and then tap Search. Or, if you are using a mouse, point to the lower-right corner of the screen, and then click Search.
- Type User Accounts in the search box, and then tap or click User Accounts.
- Click Manage User Accounts.
If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
- Your user name is highlighted, and your account type is shown in the Group column.
My computer is in a workgroup
- Swipe in from the right edge of the screen, and then tap Search. Or, if you are using a mouse, point to the lower-right corner of the screen, and then click Search.
- Type User Accounts in the search box, and then tap or click User Accounts.
- Click Manage User Accounts. If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
- Your account type is displayed under your user name.
If your account type is not Administrator, you cannot log on as an administrator unless you know the user name and password for another account on the computer that is an administrator. If you are not an administrator, you can ask an administrator to change your account type.
Windows 7 and Windows Vista
Windows XP
- Click Start, and then click Control Panel.
- Open User Accounts.
- All user accounts are listed on the User Accounts page, and each account has some status (such as Computer administrator, Limited account, and so on).
- Make sure that you are logged on to an account that has the Computer administrator status. If your account status is not Computer administrator, you cannot log on as an administrator unless you know the user name and password for another account on the computer that is an administrator. If you are not an administrator, you can ask an administrator to change your account type.
2. Scan for malware
Windows 8.1 and Windows 8
- Go to Microsoft Safety Scanner.
- Click Download Now.
- If you are prompted, click Run.
- Follow the instructions to download and install Safety Scanner. When you are prompted, add a shortcut to Safety Scanner to your desktop.
- From your desktop, double-click the Safety Scanner icon. When the program starts, click Scan Type, click Full Scan, and then click Next.
- After the scan is complete, remove all detected malware entries.
Windows 7, Windows Vista, and Windows XP
- Go to Microsoft Safety Scanner.
- Click Download Now.
- If you are prompted, click Run.
- Follow the instructions to download and install Safety Scanner. When you are prompted, add a shortcut to Safety Scanner to your desktop.
- From your desktop, double-click the Safety Scanner icon. When Safety Scanner starts, click Scan Type, click Full Scan, and then click Next.
- After the scan is complete, remove all detected malware entries.
3. Disable Security Software and Firewalls
How to Temporarily Disable your Anti-virus
AVAST
Right-click on the avast! icon in system tray (looks like this: 
but orange in color starting with v5). Select avast! shields control and there will be options to disable avast for 10 minutes, 1 hour, until the computer is restarted or permanently.
AVG
How To Temporarily Disable AVG
How To Disable individual AVG components
How To Temporarily Disable AVG Components (9.0, 2011, 2012, 2013
How to temporarily disable AVG 2013
How to temporarily disable AVG 2012
How to temporarily disable AVG 2011
AVIRA ANTIVIR
Please navigate to the system tray on the bottom right hand corner and look for an open white umbrella on red background. 
- right click it-> untick the option AntiVir Guard enable.
- You should now see a closed, white umbrella on a red background (looks to this:
)
BIT DEFENDER
- Double click on the system icon for Bit Defender.
- When the Bit Defender window appears, move mouse arrow to the left side and click >> Virus Shield.
- Move mouse arrow to the black check by Virus Shield is enabled and click.
- The black works will change to red, >> Virus Shield is disabled.
- Move mouse arrow to the top right corner and click the down arrows.
- Bit Defender is now inactive.
- To enable Bit Defender, do the same steps except click to enable.
BKAV Internet Security Professional
- Double click the tray icon to bring up the GUI.
- Choose Options/Tùy chon (2nd tab at the left, depending on what language you are using).
- Uncheck Real-time Protection.
- You can also right click on the tray icon and choose Exit/Thoát
CA Internet Security Suite 2010
- To turn off the Firewall, right-click on the CA Shield icon in the system tray, click My Internet, then click Disable Firewall.
- To turn it back on, right click system tray icon, click My Internet, then click Enable Firewall.
- To temporarily disable the Antivirus, right-click the CA Shield icon in the system tray, click My Computer, then click Enable Snooze.
- Enter the snooze time in minutes (up to 999, approx 16 2/3 hours) in the box and click Snooze.
- To end snooze, follow the same procedure and click Wake Now on the page for entering snooze time.
- To disable Antivirus on a longer basis, double-click the CA Shield icon in the system tray.
- When Security Center comes up, click Update Settings in the My Computer tab.
- Then click the red X next to Auto Scan.
- To re-enable, follow the same procedure and click the green checkmark.
Comodo Internet Security
- Right click the icon on the system tray.
- Hover over Antivirus, then Firewall and Defence+ to disable them.
- To reactivate real-time protection, repeat step 2 but set each to Enabled.
ESET NOD32 ANTIVIRUS V4
- Double click on the system tray icon:
on the bottom right hand corner. - Select Disable real-time file system protection.
- A popup will ask "Are you sure you want to disable...protection?"
- Click "Yes" to disable the Antivirus guard.
Emsisoft Anti-Malware & Internet Security
- Right-click on the Emsisoft shield icon in the system tray (green with white outline).
- Choose Pause protection, then Disable until computer restart.
- The shield icon will turn red with a white cross in the middle, and the GUI will be in red instead of green.
- Note: Do NOT exit EAM/EIS instead of disabling real-time protection, as File Guard will remain active even when the program itself is not running.
ESET SMART SECURITY
- Double click on the system tray icon: to open the main application window.
- Or via Start >> All Programs >> ESET >> ESET Smart Security.
- Click on Setup >> Antivirus and antispyware >> Temporarily disable Antivirus and antispyware protection.
- When prompted to confirm temporarily disable select Yes.
- Note: Protection will be automatically started after a system reboot.
F-SECURE ANTIVIRUS
Please navigate to the system tray on the bottom right hand corner and look for a blue 
sign.
- right click it-> select Unload.
- The F-Secure sign should now be surrounded by a red striked through circle (looking like this:
)
F-SECURE CLIENT SECURITY
Please refer to this User Guide (page 67, Real-time scanning settings}
KASPERSKY ANTIVIRUS
Please navigate to the system tray on the bottom right hand corner and look for a 
sign.
- right click it-> select Pause Protection.
- click on -> By User Request
- a popup will claim that protection is now disabled and a sign like this:
will now be shown.
G-Data Internet Security
- Go to Settings > AntiVirus > Real-time protection.
- Under Virus monitor, Behavior monitor and Exploit Protection, uncheck Enabled (recommended).
- To reactivate real-time protection, repeat step 1 and re-check all Enabled (recommended) checkboxes.
MCAFEE ANTIVIRUS
Please navigate to the system tray on the bottom right hand corner and look for a 
sign.
- Right-click it -> chose "Exit."
- A popup will warn that protection will now be disabled. Click on "Yes" to disable the Antivirus guard.
MCAFEE SECURITY CENTER 7.1
Please navigate to the system tray and double-click the taskbar icon to open Security Center.
- Click Advanced Menu (bottom mid-left).
- Click Configure (left).
- Click Computer & Files (top left).
- VirusScan can be disabled in the right-hand module and set when it should resume or you can do that manually later on.
- Do the same via Internet & Network for Firewall Plus.
Instructions to disable McAfee Security
MICROSOFT SECURITY ESSENTIALS - How to temporarily disable Microsoft Security Essentials
- Right-click on the MSE icon in the system tray and choose Open.
- Click the Settings tab, then click Real Time Protection.
- Uncheck the box next to "Turn on real time protection".
- Click the "Save changes" button.
- Exit MSE when done.
NORTON ANTIVIRUS (by Symantec)
Please navigate to the system tray on the bottom right hand corner and look for a 
sign.
- right-click it -> chose "Disable Auto-Protect."
- select a duration of 5 hours (this assures no interference with the cleanup of your pc)
- click "Ok."
- a popup will warn that protection will now be disabled and the sign will now look like this:
NORTON 360
- Right-click the Norton 360 Premier Edition icon in the system tray and select Disable Antivirus Automatic-Protect.
- You will get a new dialog box with five options: 15 minutes, 1 hour, 5 hours, Until system restart, Permanently.
- Choose 5 hours.
NORTON INTERNET SECURITY 2008
Please refer to these instructions.
NORTON ANTIVIRUS CORPORATE EDITION
Please refer to the instructions provided in the Norton AntiVirus Corporate Edition User's Guide under the section Turning File System System Protection off temporarily.
PC TOOLS THREATFIRE
- Right-click on ThreatFire's icon near the clock (it's an orange flame) and select Suspend.
- When you see that the icon has turned from an orange flame to a blue icon with an orange strip in the middle, ThreatFire has been temporarily disabled.
Qihoo 360 Total Security
- Right click on the tray icon to bring up the menu.
- Drag the slider at the corner in Protection: On to the left.
- To reactivate real-time protection, open the menu and drag the slider to the right.
Sophos Anti-virus
Please refer to these Post #28 instructions.
SYMANTEC ENDPOINT PROTECTION
Right click on the icon in the taskbar notification area & select "Disable Symantec EndPoint Protection".
TREND MICRO PRODUCTS
Please refer to these instructions.
Webroot SecureAnywhere - Antivirus
Please refer to these instructions.
Windows Defender on Windows 7/8/10
How to turn on or off Windows Defender in Windows 10
How to Disable Windows Defender in Windows 8/10
How to Turn Windows Defender on or off in Windows 8
How to Turn Windows Defender on or off in Windows 7
ZoneAlarm Free Antivirus + Firewall
Turning ZoneAlarm Free Antivirus and Anti-Spyware ON or OFF