Guide to fix Windows update error 643 or Windows error code 0x643

Windows update error 643 occurs when user wants to install Windows Live Essentials. It misses the authentication confirmation with .dll which is supplied with Windows XP, Vista and Windows 7 firewall that monitors coming and outgoing data within the computer. That’s why it stops installation with error code while getting system slow down or stuck with beep sound. User should fix and solve Windows update error 0x80070643 with “Advanced System Repair tool” quickly to avoid system crash situations.

Other symptoms of the error are Blue Screen of Death, slow system performance, system freeze, abrupt shut down etc. The reason may be rescue operation in last pool of update or instruction execution in 1 (continue) state. It needs firewall on for authentication confirmation. Windows bad registry of files, impairments in – user’s account information system time and date, firmware failure, virus attack and malware may cause Windows update error 0x643. User should remove it to save the system from crash.


{Compatible with Windows 8, 7, XP, ME, Vista, 98, 2000 (32/64)
File Size: 4.9MB Download Time: <(dsl, 2sec, dialup 2min)>}

Manual Solution:

Start >> Search >> type “Windows Firewall” >> Windows Firewall >> ON (for each group of setting) >> OK

 *The manual should be applied with different versions of MS Win as said about Windows Firewall.

For Microsoft .Net:

Programs and features >> Search Microsoft.NET framework 4 client profiles >> Right click >> Now uninstall/change or repair (the corrupted files or incomplete installed updates)

Advice (if getting failure in said steps):

  1. Start >> Right Click >> Run >> type “sfc/scannow” command >> Enter
  2. Start >> Right Click >> Run >> type “cleanmgr.exe” command >> Enter
  3. Ensure user account information
  4. Synchronize system time and date with server
  5. Check the system performance with data exchange
  6. Restore to alter recent changes
  7. Install recommended Updates
  8. Ensure hardware exterior and interior connection
  9. Install the RAM properly while cleaning slots and itself


{Compatible with Windows 8, 7, XP, ME, Vista, 98, 2000 (32/64)
File Size: 4.9MB Download Time: <(dsl, 2sec, dialup 2min)>}

Conclusive Decision :

However manuals can cure the injuries associated with Windows update error 643 but if user gets failure, a third party “Advanced System Repair tool” can solve the associates (error) in a quick scan. In addition, it provides other privileges as utility viz. cache speed enhancement, defragmentation, keeping track on Kernel issued instructions for execution, free technical supports to download updates, free malware and virus scan and removal with confirmed notice.


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