How to Solve Error Code 30088-27 In Microsoft Office365/2019/2021

The above Microsoft office 365/2021/2019 installation Error code 30088-27 primarily appears when you try to open office 365 program on a Windows11 and Windows10 computers . It has been observed that this installation Error code 30088-27  needs to repair or a reinstall and you can read the below information for more knowledge. In this article, we will discuss about the different methods used to repair and resolve this office error .
error code 30088-27

Disclaimers – Before you attempt to fix the Microsoft office issue, we highly recommend taking a registry back up and set a system restore point. Because this process involves repair on registry and changes. In case if something goes wrong during this process, We can revert back the settings and we can does a system restore? Also, save your

  • documents
  • emails
  • spreadsheets and
  • Microsoft office related files and back It up

(In case if you not sure how to back up, consult the Experts to help you)

Solutions for Microsoft Office 365/2021/2019 Installation Error Code 30088-27 

Microsoft Office 365/2021 programs will not open at all and gives you an Error code 1058-4. Even you get a different Error code 30088-27 when you try to repair or uninstall windows. First do a disc clean up so that we can remove old-Microsoft office 365 installation traces from your computer.

How to do disc-cleanup?

Disk cleanup is the process of freeing up disk space on a computer’s hard drive. 

Method-1 Creating shortcut

  • Firstly, Right click on your computer home screen
  • Then, Go to “new” in the list and select “Shortcut

After clicking on a shortcut

A command prompt windows update will open and type the command “cleanmgr.exe” in it and name as you like to remember it as a disc clean up shortcut button

  • Then an icon will appear on your home screen, click on it and select required disc to clean up (Normally Software’s gets installed on DRIVE:C which is default here)
  • Then a list of folders will appear, select temp folder, recycle bin and proceed to clean up the disc. Meanwhile, watch this video to follow above steps for a disc cleanup


1. Firstly, Open drives windows (Shortcut CTRL+E and choose PC name from right side panel)
2. After that, Right click on C:drive and select properties
3. In the properties windows, Select Disc clean up button to proceed and then follow the step-4 from method -1

It takes sometime if the computer have too many junk files to cleanup

If you have a different issue, we are welcome to investigate and provide a relevant solution. Here are few things which we can try to resolve this issue.
  • The first attempt is to check if there is any previously installed Office program with the same version. That needs to be removed and then the Office installation should be commenced from the beginning
  • If we don’t see any previously installed similar Office 365 programs, It is recommended to run a network check through command line

The command prompt should be opened using the administrative permissions and then network command which needs to be executed as follows


Irrespective of the version of your office Installation program, it is a very common line to check the status of your previously installed office program.

The server name should not show you as unknown

Server name is show as unknown, restart your router or the modem and execute the same steps again

Server check passes correctly, then use the other setup file which is related to 64 bit from advanced steps under office setup file

If the office 365/2019 installation Error code 30088-27, still appears after the Office installation program, attempt to repair the Microsoft office programs

Once the Microsoft Office repair fails again with some office 365/2021 Error code 30088-27, a reinstallation of office 365 Program is required

If the Microsoft Office repair succeeds and you still see the same office installation Error code 30088-27

You can perform a system file scan process which can be started

On a command prompt windows with administrative rights

SFC /SCANNOW is the command line which needs to be executed

How to do a SFC Scan

Firstly, Click on the start button and type “cmd

After that, Open “Command prompt window” and

Then type “SFC/SCANNOW” PRESS enter button

  • Finally, The scanning process start and this process takes sometime to finish
    SFC Scan

This video shows how to do SFC scan


If the computer says, no integrity violations found, then try to reinstall the program which may sometimes replaces the corrupted files on your office 365/2021 program. It is also recommended to run the windows updates regularly, make sure it is set to automatic updates. Otherwise manually install the updates from your end. The windows11 and Windows10updates will download the latest drivers required for your computer hardware irrespective of brand or the manufacturer.


All the driver updates for windows 10 are sent along with Windows 10 updates only. If you would like to have a support taken through a technical assistance, Feel free to initiate a chat or write us on with the complete information of the computer make and model, office or windows operating system versions and the best time to reach you for support.
We provide support for Microsoft products like Windows and Office and Outlook unlicensed Product, we can also setup free tools provided and included with Microsoft Windows and can train you on how to use them to maintain the health of your computer.

In Conclusion,

You can also ask for System repair Image support or some Recovery help, we also restore your computer to a point when it was working fine without any issues. Feel free to chat with us for any support. A free assistance can be provided for all the basic troubleshooting without any additional resources.
Error Code 30088-27

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