MICROSOFT OFFICE 365/2021/2019 INSTALLATION ERROR 30033-77

Microsoft Office 365/2021/2019 installation Error 30033-77

Microsoft Office 365/2021/2019 installation Error 30033-77

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Check The Computer to Fix office 365/2021 Error Code 30033-77







There are some Office error code 30033-77and error 30033-44  that require office instant action. There will be a log for every action on the computer which records all the events. It is termed as an Event viewer. This is a Windows Inbuilt office installation program that provides all the information for the problem-causing keys.

This is caused by the failure of your Windows-related services and the executable office file is unable to read when you try installing Office. There are issues with the start-up office programs which should be checked under System Configuration.










Perform System office File Scan












System file scan (SFC scan) is a windows inbuilt application used to fix altered/modified and damaged office files of the operating system.

It can fix several updates failures, and other violations done by many mismatched office program files.

To Run a system office program file scan in the windows operating system, first Open the command prompt (CMD) in administrator mode and run the command SFC/SCANNOW











SFC/SCANNOW












If you see any file violations persisting after the scan, then move to Event viewer to check what has caused the office error code 30033-77.










Using Event Viewer to Check Office Error Logs







  1. Press on a start button, open the command prompt in the Run

  2. Type “EVENTVWR” and click enter to open Event viewer logs.







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