Getting error while installing office 2021

Manoj Sahu 60 Reputation points
2025-09-22T06:48:11.14+00:00

Getting error while installing office 2021,

Screenshot 2025-09-22 113257

Microsoft 365 and Office | Install, redeem, activate | For home | Android
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  1. Kai-H 6,010 Reputation points Microsoft External Staff Moderator
    2025-09-29T10:25:37.3+00:00

    Hi Manoj Sahu,

    It has been a while and I am writing to see how things are going with this issue.  

    Have you had a chance to check the replies provided?  

    Any update would be appreciated. 

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Answer accepted by question author
  1. Ivan B 87,325 Reputation points Independent Advisor
    2025-09-22T12:11:39.9633333+00:00

    Hii ,

    Try installing offline, but first check that you have free space on your C:\ drive.

    Install Office 2021: https://officecdn.microsoft.com/db/492350F6-3A01-4F97-B9C0-C7C6DDF67D60/media/en-US/HomeBusiness2021Retail.img

    After the download is complete, disconnect from the internet > right click > select Mount > go to Windows Explorer > My Computer > select the Office icon > right click > open > Go to the office folder > Go to setup64.exe

    If you get the error again, follow the procedure below:

    Access the link below. Select "Uninstall." It will open "Get Help." It will ask you to uninstall Office. Say "yes" and wait for the process to complete.

    https://support.microsoft.com/en-us/office/uninstall-microsoft-365-from-a-pc-9dd49b83-264a-477a-8fcc-2fdf5dbf61d8

    If it fails, you'll have to perform a manual uninstall, but use the MSI method to uninstall.

    https://support.microsoft.com/en-us/office/manually-uninstall-office-4e2904ea-25c8-4544-99ee-17696bb3027b

    Give feedback if the information was useful or not.

    Thanks

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Answer accepted by question author
  1. Kai-H 6,010 Reputation points Microsoft External Staff Moderator
    2025-09-22T11:18:07.44+00:00

    Hi Manoj Sahu,

    Welcome to Microsoft Q&A forum.

    Sorry for this unwanted experience regarding Office 2021 installation issue. This error may occur due to an unsupported operating system, unstable internet connection, corrupted system files, or low disk space.

    Here are some workarounds you can try to resolve the issue:

    Preliminary techniques

    Before you proceed with the primary methods, you may try the preliminary techniques as follows and it may just fix the issue:

    • Check the internet connectivity and ensure that it is stable
    • Temporarily disable your antivirus and firewall.
    • Make space in the disk by cleaning the temporary files using the Disk Cleanup tool.
    • Check and install pending Windows OS updates.

    Run SFC scannow

    If the error arises due to corrupted system files, you can repair the system files by running the System File Checker utility.

    • To run the utility, launch Command Prompt in admin mode.
    • Now, type the below command and hit Enter:
        sfc /scannow
      
    • The process takes a while so wait patiently. It will identify the problem files and apply the fix or replace any missing system files with fresh ones.
    • Once done, exit Command Prompt, and restart your PC.

    Uninstall and reinstall Office

    If none of the above methods work, the only option left would be to uninstall and reinstall Microsoft Office. You can uninstall Microsoft Office via Windows Settings, but if it doesn’t work, you would need to clear the Office installation files. For this, you can download and install the Microsoft Office uninstall tool that will help fix Office & other problems from the official Microsoft Support page.

    Hope this helps. Feel free to get back if you have other question.


    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment."    

    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread. 

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  1. Manoj Sahu 60 Reputation points
    2025-09-29T10:47:07.0233333+00:00

    Hi Friends,

    Got the issue resolved after downloading the latest software for

    Office Deployment Tool:

    https://www.microsoft.com/en-us/download/details.aspx?id=49117

    https://www.microsoft.com/en-us/download/details.aspx?id=103446

    https://learn.microsoft.com/en-us/office/volume-license-activation/configure-a-kms-host-computer-fo…

    Configure a KMS host computer to activate volume licensed versions of Office - Office | Microsoft Learn

    Provides Office admins with steps to configure the Key Management Service (KMS) host computer to activate volume licensed versions of Office, Project, and Visio.

     

    A. C:\program files\Microsoft office\office16>cscript ospp.vbs /cscript.exe ospp.vbs /sethst:KMShostname

     

    B. C:\program files\Microsoft office\office16>cscript ospp.vbs /act  (This allows us to activate the client)

     

    C. C:\program files\Microsoft office\office16>cscript ospp.vbs /dstatus  (This will allow us to verify the activation was successful)

     

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