[KB63363906] – Fix Office Installation Error Code 1603 in Office 2021/2019/Microsoft 365

Easily With The Most Simple Solutions Fix Error Code 1603 for Office 2021 or Office 2019 Or Microsoft 365. When you install Office on windows 11 or windows 10, you may see error code 1603 if an earlier installation of Office 365/2021/2019 is failed. Here is some process that you can try to fix office installation error code 1603. But before proceeding ahead first look the most common causes of this office 365/2021/2019 error code 1603 below

  1. Check if the Old office app is already installed on the PC. If so, uninstall and reinstall the app
  2. Install the package to a folder that is not encrypted.
  3. Grant Full Control permissions to the SYSTEM User Account
  4. Firewall or antivirus software might be blocking the Office installation.

Micrososft Office 365/2021/2019 Installation Error Code 1603

[KB63363906] – Follow the given below steps to Fix Microsoft 365 Error Code 1603 in windows 10/11

Temporarily disabling Defender or Antivirus

You could fix the Office Installation Error code 1603 by disabling the firewall or antivirus temporarily.

Steps to disable windows firewall

  • Start and type “Windows Security” to search
  • Select the Windows Security app >> go to Virus & threat protection, >> under Virus & threat protection settings >> select Manage settings
  • Real-time protection to Off

Steps to disable Antivirus

  • Open Antivirus program installed on the computer.
  • Click settings and select to real time protection.
  • Select Turn Off real time protection.
  • Then Navigate to Antivirus firewall.
  • Turn off Antivirus firewall

Repair Your Office App to Fix Microsoft Office Error Code 1603

Error code 1603 in Microsoft 365 Or Office 2021 or Office 2019 will be fixed when the Office repair tool replaces the entire corrupted system files.

Follow the given steps below to run the repair tool to fix the microsoft office error 1603.

  • Click Start >> Settings >> Apps
  • Right Click Microsoft 365 Or Office 2021 or Office 2019
  • Select Modify
  • Choose Quick Repair on the prompt that asks how would you like to repair your Office programs and Select repair.
  • Reboot your PC and check if the problem is resolved.

If the Microsoft Office Installation error Code 1603 issue still persists, then perform all the steps Talk to our experts or follow the steps given below.

SFC Scan to Fix Microsoft 365 Installation Error Code 1603

SFC SCAN is the command line that we use to do that process. I will provide an explanation for you the stairs in element on the way to carry out this scan.

  1. Open the Command Prompt as an Administrator
  2. Type this below syntax on the command line window
  3. SFC /SCANNOW
  4. Finally, Hit Enter

SFC Scan

By following this procedure you’ll get a fantastic end result pointing out that each one the problems are resolved and the turn aspect bad end result might be that your home windows is corrupted.

Steps to delete Temp files

  • Press the Windows + R keys at the same time
  • Open field, type %temp%, then press ENTER
  • Press the CTRL + A keys at the same time to select all items.

Steps for Windows Disk Cleanup tool

• Press the Windows + R keys at the same time
• Open field, type %Cleanmgr.exe%, then press ENTER
• Select the specific drive you want to clean up, and then select OK.

Under Files to delete, select the file types to get rid of

Perform a Windows Update

• Click Start and go to settings
• Click Windows Update and security
• Click check for update
• Once the update completes, restart your computer.

Check if you are able to open the Office applications without any error.

If the Solution above haven’t solved your office error 1603 your PC may experience deeper Windows problems. Chat with the experts for the fix

Disclaimer: We recommend you to do the back up before we proceed these steps, during reset Windows 11 and windows 10 installation means that all your files and settings will be lost during the reset process.

Windows 10 – Reset your PC

1.Select Start > Settings > System > Recovery. Open Recovery settings.
2.Next to Reset this PC, select Reset PC. Then choose from the options and/or settings in the table below.

Windows 11 – Reset your PC

1.Select Start > Settings > System > Recovery. Open Recovery settings.
2. Next to Reset this PC, select Reset PC. Then choose from the options and/or settings in the table below.

In Conclusion

If you have problem in following this methods, then we suggest you to choose a Technical Support from us to help you better. I am sure they will give you the best solutions to resolve this Office Installation Error Code 1603 in Office 2021/2019/Microsoft 365 completely. You can also visit our website for more information.

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