771 Office 365

771 Error Code Office 365 Information
Difficulty LevelCritical
Resolution:DLL Issue
Cause:Malwares/Virus
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix 771 Error Code in Office 365

Repair Difficulty : Medium

Step 1: Disable Windows Firewall

For Windows 8

1) Press “Windows Key + R” and Type “Firewall.cpl” and Press Enter.
Office Error Code 771 Office 365 img 8
2) Microsoft Windows 8 Firewall Window will Open.
Office Error Code 771 Office 365
3) Press “Turn Windows Firewall on or off”
Office Error Code 771 Office 365 img 9
Warning: If you are logged in as Normal user you will be asked to
Office Error Code 771 Office 365 img10
4) Click “Turn off Windows Firewall (not recommended)” under each network
location and then Click “OK”
Office Error Code 771 Office 365 img11

Step 2: Reset Internet Explorer Security settings

1. Now, tap on Start button.

start
2. Type the command “inetcpl.cpl” and click OK button.
3. Click on the “Security” tab.

inetcpl security
4. Click “Reset all zones to default level” button at the bottom of the window.
5. Click OK again.

Step 3: Temporarily Disable Antivirus

– Open Your Antivrus
– Disable it till the Office 365 installation is going on. Check antivirus manufacturer website for more details.

Step 4: Try the installation again

In most case 771 error code in Office 365 should be resolved by now, if however the problem still persists please get your system checked by an expert.

If you are not able to resolve the issue following above steps, you can contact our 24×7 Chat Support for help.

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  • January 1st, 1970

    Posted In: Office 365

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