Steps to fix Microsoft Office 365 Error Code 30088-26:
Whenever if you trying to install office 365 updated version and you keep getting error 30088-26 it means you haven't installed previous office 365 properly or your previous office file got corrupt. and you might be seen below the image as an error.
Some Common factor that causes Office Error 30088-26:
Pre-existing office installation files.
Tamp and logs files.
The office file got corrupt.
The office didn't update fully it updated partially.
Windows Update not installed properly.
Antivirus or Windows Firewall might be blocking the Office installation.
Steps to Fix/Resolve/troubleshoot the error code 30088-26:
1 – Repair your Office app
Error Code 30088-26 will be fixed when the Office repair tool replaces all the corrupted system files. Follow the steps below to run the repair tool to fix the error.
Open Control Panel using Start.
Click on Programs and select Programs and Features.
Click on the Office product that you want to repair.
Click Change.
Select Quick Repair and click on Repair. If Quick Repair didn’t fix the Error Code 30088-26, select Online Repair and click on Repair.
Note: If Office Repair did not fix this error code, then remove and reinstall the Office installation to fix this Error Code 30088-26.
2 – Steps to remove Office
In case if the error persists even after running the Office repair tool, uninstall Office from your computer.
Open Control Panel using Start
Click on Programs and select Programs and Features.
Select Office Suite and click on Remove.
Note: If Office installation failed or it didn’t fix the error, manual installation is required to completely remove the Office Suite.
3 – Steps to remove Office manually to fix the Error Code 30088-26
If the error code 30088-26 is re-occurring, proceed with the following steps to manually remove the Office program from your computer.
Step 1: Remove the Windows Installer packages
Find the Office 16 installation folder, typically located in C:\Program Files.
Right-click the Microsoft Office 16 folder and select Delete.
Step 2: Remove the Office scheduled tasks
Open a Command Prompt window as an administrator.
At the command prompt, type the following commands and press Enter after each one:
schtasks.exe /delete /tn “\Microsoft\Office\Office Automatic Updates”
schtasks.exe /delete /tn “\Microsoft\Office\Office Subscription Maintenance”
schtasks.exe /delete /tn “\Microsoft\Office\Office Click To Run Service Monitor”
Step 3: Use Task Manager to end the Click-to-Run tasks
Open Task Manager.
Click the Process tab
If the following processes are running, right-click each one, and then click End task after you select each process.
.exe
setup*.exe
Step 4: Delete the Office files
Press Windows logo key + R to open the Run dialog box.
In the Open box, type %ProgramFiles%, and then click OK.
Delete the “Microsoft Office 16” folder.
Delete the “Microsoft Office” folder.
Open the Run dialog box, type %ProgramFiles(x86)%, and then click OK.
Delete the “Microsoft Office” folder.
Step 5: Delete the Office registry sub keys
Open Registry Editor.
Delete the following registry sub keys:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\ClickToRun
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\AppVISV
HKEY_CURRENT_USER\Software\Microsoft\Office
Then Delete the Office key.
Step 6: Delete the Start menu shortcuts
Open a Command Prompt window as an administrator.
Type %ALLUSERSPROFILE%\Microsoft\Windows\Start Menu\Programs, and then press Enter.
Delete the “Microsoft Office 2016 Tools” folder.
Original Content Source: https://mslivesupportchat.blogspot.com/2018/06/error-code-30088-26.html
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