Windows Update 800800005 generally occurs during Microsoft Office/ Windows installation, uninstallation, usage or update. We have discussed below the steps on how to fix error.

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How to Fix Windows Update 800800005 Error Code

Error Code Message

windows update 800800005 Error Code Log
Log Name: sys32\windows update 800800005.log
Source: Read/Write Error
System Event ID: 614
Application Task Category: (473)
Level: Office Version Conflict
Keywords: Office 365 windows update 800800005,Office 2013 Home windows update 800800005,Office OneNote windows update 800800005, Outlook windows update 800800005, Windows update windows update 800800005
User: Admin
  • Faulting application ID: officevalidation.exe, version: 9.0.0238.97435, time stamp: 0×42918036
  • Faulting Module ID: KERNELBASE.dll, version: 6.2.5052.66479, time stamp: 0×44308076, time stamp: 0×41998625
  • Exception code ID: 0xe05g590b
  • Fault offset ID: 0xb04g039a
  • Faulting process ID: 0×725
  • Faulting Application Start Time: 0x02acbe6d79682650
  • Faulting Application Path: ~System/msoffice/checkip.dll
    Faulting module path: ~tmp/Temp/office/Office.dll
  • Report ID: d5a65g72-8296-74g1-7125-8248fce9c533

Disclaimer: The steps given must be done by an Experienced Computer Technician. We are not responsible if something goes wrong by following the steps given on the site. All steps are indicative and should resolve the issue in most of the computer. If however if the steps did not resolve the issue on your computer, you can contact our 24×7 Chat support on for help by clicking here.

1. Disable Proxy

To check if you are behind proxy open Command Prompt.
Press Win key + R and type CMD
open cmd windows update 800800005

In command prompt type this command: netsh winhttp import proxy source=ie
check proxy cmd

If you see “Error writing proxy settings. (5) Access is denied.” this message means you should simple try disabling the Proxy setting in Internet Explorer and windows update 800800005 should be fixed.

Note: If you are unable to understand or do any of the steps you can contact our Online Support technician by clicking here.

2. Register DLL Dependencies

Sometimes during office installation or Windows update some of the DLL (Dynamic Link Library) get missed and are not properly registered in Windows. As a result of which Microsoft Office will be unable to start. Please refer the error log above for detailed explanation:

To register the missing DLL simply Press Win Key + R and Type:
regsvr32 dllfix.dll

register dll

3. Try the installation again.

In most case the error code windows update 800800005 should be resolved by now. If however the problem still persists you can contact our 24×7 Tech Support for resolving the issue.

windows update 800800005 Affects following Office Products : PowerPoint, Word, Access, Outlook, OneNote, Excel, Publisher

windows update 800800005 can occur in following operating systems: Windows Vista, Windows 7, Windows 8, Windows 8.1, Microsoft Surface Education, Windows Update Error

Entry ID: 4401962 – Last Review: 26/04/2015 – Revision: 7.9

  • Microsoft Outlook 2016
  • Microsoft Word 2016
  • Microsoft PowerPoint 2016
  • Microsoft OneNote 2016
  • Microsoft Excel 2016
  • Microsoft Office 2016
  • Microsoft Office 365
  • Microsoft Outlook 365
  • Microsoft Word 365
  • Microsoft PowerPoint 365
  • Microsoft OneNote 365
  • Microsoft Excel 365
  • Microsoft Office 2013
  • Microsoft Outlook 2013
  • Microsoft Word 2013
  • Microsoft PowerPoint 2013
  • Microsoft OneNote 2013
  • Microsoft Excel 2013
  • Microsoft Office Professional Plus 2016
  • Microsoft Office Standard 2016
  • Microsoft Office Home and Business 2013
  • Microsoft Office Home and Student 2013
  • Microsoft Office Professional 2013
  • Microsoft Office Professional Plus 2013
  • Microsoft Office Standard 2013
  • Microsoft Office Professional Academic 2013
  • Microsoft Office Update Error


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