Windowsupdate_80071a91 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 Windowsupdate_80071a91 Error Code

Error Code Message

windowsupdate_80071a91 Error Code Log
Log Name: tmp\windowsupdate_80071a91.log
Source: Windows Issue
System Event ID: 561
Application Task Category: (101)
Level: Windows Update Error
Keywords: Office 365 windowsupdate_80071a91,Office 2013 Home windowsupdate_80071a91,Office OneNote windowsupdate_80071a91, Outlook windowsupdate_80071a91, Windows update windowsupdate_80071a91
User: Administrator
Description:
  • Faulting application ID: Officeintegrity.exe, version: 4.3.6934.97315, time stamp: 0×55624305
  • Faulting Module ID: checkip.dll, version: 3.6.8972.00002, time stamp: 0×68975742, time stamp: 0×29017915
  • Exception code ID: 0xa07f158e
  • Fault offset ID: 0xa07e235c
  • Faulting process ID: 0×584
  • Faulting Application Start Time: 0x02abfe9e78066877
  • Faulting Application Path: ~tmp/Temp/msoffice/win32.dll
    Faulting module path: ~Windows/Microsoft/KERNELBASE.dll
  • Report ID: g1e35b15-1513-52d4-9247-5673dbe3b385

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 windowsupdate_80071a91

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 windowsupdate_80071a91 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 windowsupdate_80071a91 should be resolved by now. If however the problem still persists you can contact our 24×7 Tech Support for resolving the issue.

windowsupdate_80071a91 Affects following Office Products : PowerPoint, Word, Access, Outlook, OneNote, Excel, Publisher

windowsupdate_80071a91 can occur in following operating systems: Windows Vista, Windows 7, Windows 8, Windows 8.1, Microsoft Surface Education, Windows Update Error


Entry ID: 9788344 – Last Review: 24/09/2014 – Revision: 4.5

  • 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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