0x800b0100 Office 365

0x800b0100 Error Code Office 365 Information
Difficulty LevelMedium
Resolution:Virus Issue
Cause:System Level Conflict
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix 0x800b0100 Error Code in Office 365

Repair Difficulty : Medium

Step 1: Disable Firewall

For Windows 8
1) Press Win+R button and Type “Control” followed by Enter key.
Office Error Code 0x800b0100 Office 365 step 6
2) In Control Panel , type firewall in the search box and click on Windows Firewall.
Office Error Code 0x800b0100 Office 365 step 7
Office Error Code 0x800b0100 Office 365
3) Click On “Turn Windows Firewall on or off”
Office Error Code 0x800b0100 Office 365 img 9
Note: If you are logged in as Guest user you will be asked to login as Administrator.
Office Error Code 0x800b0100 Office 365 img10
4) Turn
Off Windows Firewall and Press “OK” Button.
Office Error Code 0x800b0100 Office 365 img11

Step 2: Proxy Issue

1) Goto Control Panel.
Windows 7 : Click On Start and then Click On Control Panel from Right Pane.
Windows 8 : Press Windows key + R and type “Control” and Press Enter.
Office Error Code 0x800b0100 Office 365 img 9
2) Open “Internet Options” In Control Panel .
3) Click On Connections Tab and then Choose LAN Setting.
Office Error Code 0x800b0100 Office 365 img 11
4) Uncheck “Use a proxy server for your LAN” if its switched ON.

Step 3: Repair System Files

1) Press Win + R
Office Error Code 0x800b0100 Office 365 img14
2) Type cmd and Press Enter.
Office Error Code 0x800b0100 Office 365
3) Type “sfc /scannow” and press enter.
Office Error Code 0x800b0100 Office 365 img18
Note: If you are logged in as Guest user you will be asked to enter Admin Password

Step 4: Try the installation again

In most case 0x800b0100 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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  • Posted In: Office 365