0xc1900101 Office 365

0xc1900101 Error Code Office 365 Information
Difficulty LevelMedium
Resolution:DLL Issue
Cause:File Corruption
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix 0xc1900101 Error Code in Office 365

Repair Difficulty : Critical

Step 1: Disable Firewall

For Windows 8
1) Press Win key + Q. A search box will come up on right pane.
Office Error Code 0xc1900101 Office 365 step 6
2) In Control Panel Window, type firewall in the search box and click on “Windows Firewall”.
Office Error Code 0xc1900101 Office 365 step 7
Office Error Code 0xc1900101 Office 365
3) Press “Turn Windows Firewall on or off”
Office Error Code 0xc1900101 Office 365 img 9
Note: You will need Administrator privileges to enable or disable Windows firewall.
Office Error Code 0xc1900101 Office 365 img10
4) Turn
Off Windows Firewall and Press “OK” Button.
Office Error Code 0xc1900101 Office 365 img11

Step 2: Proxy Issue

1) Open Control Panel.
Windows 7 : Click On Start and then Select Control Panel from Right window.
Windows 8 : Press Windows Key + Q and Type “Control” And Click on it.
2) Click On “Internet Options” In Control Panel Window.
3) Click On Connections Tab and then Choose LAN Setting.
Office Error Code 0xc1900101 Office 365 img 11
4) Uncheck “Use a proxy server for your LAN” if its already ON.

Step 3: Check System Integrity

1) Press Windows + R
Office Error Code 0xc1900101 Office 365 img14
2) Type “cmd” and Press Enter.
Office Error Code 0xc1900101 Office 365
3) Type “sfc /scannow” and press enter.
Office Error Code 0xc1900101 Office 365 img18
Note: If you are logged in as Normal user you will be asked to login as Administrator.

Step 4: Try the installation again

In most case 0xc1900101 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