801812c1 Office 365

801812c1 Error Code Office 365 Information
Difficulty LevelCritical
Resolution:DLL Issue
Cause:Software Level Conflict
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix 801812c1 Error Code in Office 365

Repair Difficulty : High

Step 1: Disable Windows Firewall

For Microsoft Windows 8
1) Press Win+R button and Type “Control” followed by Enter key.
Office Error Code 801812c1 Office 365 step 6
2) Open Windows Firewall from Control Panel Window
Office Error Code 801812c1 Office 365 step 7
Office Error Code 801812c1 Office 365
3) On left pane you will find “Turn Windows Firewall on or off”
Office Error Code 801812c1 Office 365 img 9
Note: You will need Admin rights to enable or disable firewall.
Office Error Code 801812c1 Office 365 img10
4) Under “Home or Work Network Location Settings” And “Public Network Location Settings” Click On “Turn Off Windows Firewall”
Office Error Code 801812c1 Office 365 img11

Step 2: Proxy Issue

1) Goto Control Panel.
Microsoft Windows 7 : Click Start and then Select Control Panel from Right Pane.
Windows 8 : Press Windows key + R and type “Control” and Press Enter.
Office Error Code 801812c1 Office 365 img 9
2) Click On “Internet Options” In Control Panel Window.
3) Click On Connections Tab and then Choose LAN Setting.
Office Error Code 801812c1 Office 365 img 11
4) Turn off “Use a proxy server for your LAN” if its already ON.

Step 3: Run System Scan

1) Press Windows + R
Office Error Code 801812c1 Office 365 img14
2) Type cmd and Press Enter.
Office Error Code 801812c1 Office 365
3) Type “sfc /scannow” and press enter.
Office Error Code 801812c1 Office 365 img18
Note: You will need Administrator previlage to run the sfc command.

Step 4: Try the installation again

In most case 801812c1 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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