kb3021910 Office 365

kb3021910 Error Code Office 365 Information
Difficulty LevelVery High
Resolution:System Fix
Cause:File Corruption
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix kb3021910 Error Code in Office 365

Repair Difficulty : Medium

Step 1: Disable Windows Firewall

For Microsoft Windows 7 and later

1) Press “Win + R” and Type “Firewall.cpl” and Press Enter.
Office Error Code kb3021910 Office 365 img7
2) Microsoft Windows Firewall Window will Open.
3) Click On “Turn Windows Firewall on or off”
Office Error Code kb3021910 Office 365 img7
Note: You will need Administrator rights to disable firewall.
Office Error Code kb3021910 Office 365 img5
4) Turn Off Windows Firewall and Press “OK” Button.

Note: Please Activate Microsoft Windows Firewall after Office 365 installation is complete.

Step 2: Proxy Issue

1) Goto Control Panel.
Windows 7 : Click 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 kb3021910 Office 365 img 9
2) Open “Internet Options” In Control Panel .
3) Click On Connections Tab and then Press LAN Setting.
Office Error Code kb3021910 Office 365 img 11
4) Turn off “Use a proxy server for your LAN” if its switched ON.

Step 3: Repair System Files

1) Press Windows + R
Office Error Code kb3021910 Office 365 img14
2) Type “cmd” and Press Enter.
Office Error Code kb3021910 Office 365
3) Type “sfc /scannow” and press enter.
Office Error Code kb3021910 Office 365 img18
Note:
Step 3:Disk Cleanup
1) Press Win + R
Office Error Code kb3021910 Office 365
2) Type “Cleanmgr” and Press Enter.
Office Error Code kb3021910 Office 365 img19
3) Select the OS Partition and Press OK.
4) Click on Clean up System Files

Step 4: Try the installation again

In most case kb3021910 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