Fix Office Update Error 30088 26 on Windows 10

Troubleshoot Office error on your device to work seamlessly.

The Office update error 30088 26 can be an extremely frustrating issue for users who are trying to update Microsoft Office. This error code is associated with the Microsoft Office Click-to-Run service and can occur when the update process is interrupted. In this article, we will look at the possible reasons and how to fix error code 30088 26. So, keep reading!

Fix Office Update Error 30088 26 on Windows 10

How to Fix Office Update Error 30088 26 on Windows 10

Microsoft error 30088 26 is a common issue in Microsoft Office applications. Once the cause of the error has been identified and the necessary steps are taken to fix it, the user should be able to successfully update their Office software. Keep reading to know the reasons and how to fix this issue.

Quick Answer

Follow the below steps to fix this Office error:

1. Open the desired application (MS Word) and click on File.

2. Select Options.

3. Click on Add-ins.

4. Select COM Add-ins in the Manage drop-down menu and click on Go.

5. Here, untick all the Add-ins that you have installed, and click on OK.

6. Restart the application.

What causes Office Update Error 30088 26?

Some of the possible reasons for this Office issue are listed below:

  • Issues in Office Installation
  • Outdated Windows operating system
  • Outdated MD Office suite
  • Corrupt files on your PC
  • Antivirus program blocking the MS suites
  • No sufficient space on your PC
  • Client credentials interfering with the Office processes

This error typically occurs when a user attempts to install or update a Microsoft Office application, such as Word, Excel, or PowerPoint. The error message indicates that there is a problem with the installation or update process, possibly due to an interrupted connection or a corrupted installation file.

Method 1: Basic Troubleshooting Methods

Before you follow the advanced steps, try these basic troubleshooting steps to fix the issue within steps.

1A. Update MS Office

Out-of-date software may contain bugs, security vulnerabilities, or other issues that could cause the program to malfunction, resulting in error code 30088-26. By keeping your software up to date, you can ensure that these issues are addressed and that your programs are running smoothly and as expected.

1. Open the desired application, for example, MS Word.

2. Click on File on the top-left corner of the screen, as depicted.

Click on File. Fix Office Update Error 30088 26 on Windows 10

3. From the given menu, select Account.

select Account in file option ms word

4. Here, click on Update Options next to Office Updates.

click on Update Options next to Office Updates. Fix Office Update Error 30088 26 on Windows 10

5. Now, click on Update Now, as depicted.

click on Update Now. Fix Office Update Error 30088 26 on Windows 10

6. Follow the Update Wizard.

7. Do the same for other MS Office Suite apps too.

1B. Disable Add-ins

Disabling Add-ins can help fix this error as it reduces the number of programs running in the background and competing for resources, leading to conflicts and errors. Additionally, many add-ins are not updated as frequently as Office, so they may not be compatible with the latest version.

1. Open the desired application, here, MS Word and click on File.

Open the File menu in MS Word

2. Select Options, as shown.

Select Options from the menu

3. Next, click on Add-ins. Select COM Add-ins in the Manage drop-down menu. Then click Go…

Manage COM Add-ins MS Word Options

4. Here, untick all the Add-ins that you have installed, and click OK.

Note: If you do not want those add-ins, we suggest that you click on the Remove button to remove them permanently.

Check the box for Add ins and click on Remove then OK. Fix Office Update Error 30088 26 on Windows 10

5. Restart the application and check if it opens & works properly.

1C. Disable Firewall Protection (Not Recommended)

When enabled, the firewall blocks ports and prevents the program from connecting to the Internet. By disabling the firewall, the program can access the Internet and receive the necessary updates, which can then help to fix error code 30088. Additionally, disabling the firewall can also help to identify if the issue is caused by a firewall blocking the program from accessing the Internet.

Note: When disabling firewall protection, it is important to keep in mind that it is a security measure that is in place to protect your computer and its data. As such, it is important to only temporarily disable the firewall protection, and then re-enable it when the Office error is fixed.

Follow our guide on How to Disable Windows 10 Firewall to implement the task.

Check the boxes Turn off Windows Defender Firewall

1D. Update Windows OS

Outdated versions of Windows may be missing important updates that can cause programs to malfunction and errors to occur. By updating Windows, users can ensure that their computer is running the most recent version of the operating system, which includes the most recent bug fixes and security patches released by Microsoft. This can help to ensure that programs are running optimally and reduce the risk of errors occurring, such as error code 30088 26.

Follow our guide on How to Download and Install Windows 10 Latest Update to update your Windows PC.

Update Windows

5. Repair System Files

Repairing system files can help to fix this error code because these files contain important information about the program in which the error has occurred. It is possible that the files have become corrupt or are missing, which can cause the program to malfunction and display error codes. By repairing the system files, it can restore the program back to its original state, resolving the issue and allowing the program to function normally again.

Read our guide on How to Repair System Files on Windows 10 and follow the steps as instructed to repair all your corrupt files.

Run SFC and DISM command lines to repair system files. Fix Office Update Error 30088 26 on Windows 10

6. Clean Up Temporary Files

Cleaning up files can help to fix error code 30088 26 when updating Office because it can help to optimize the system and reduce the amount of clutter. When the system is optimized, it can run more efficiently and this can help to reduce the potential for errors. Additionally, cleaning up files can help to free up disk space and reduce the load on the system, which can help to improve performance and reduce the risk of errors.

Follow our guide 10 Ways to Free Up Hard Disk Space On Windows which helps you clear all unnecessary files in your computer.

click on Clean up… button under System Restore and Shadow Copies

Method 2: Launch MS Office from Installation Location

Launching Microsoft Office from the installation helps to fix this Office error code because it guarantees that all the Office components are installed correctly and that all of the related services and features are running properly. It also ensures that any potential software conflicts are avoided, as launching Office from the installation ensures that all of the necessary components are running and that the correct version of Office is being used.

Note: MS Word is taken as an example here. Follow the steps appropriately based on your conflicting Office app.

1. Right-click on the app Shortcut and select Properties, as shown.

right click and select properties option. Fix Office Update Error 30088 26 on Windows 10

2. Switch to the Details tab in the Properties window.

3. Locate the source of the application through the Folder Path.

Locate the source of the application through the Folder Path.

4. Now, navigate to the source location and Run the application from there.

Also Read: Fix Office Error Code 1058 13 in Windows 10

Method 3: Disconnect Problematic Account

Disconnecting problematic accounts can help to fix Microsoft Office error code 30088 26 by helping to identify and eliminate any issues that may be causing the error. For example, if the connection is not secure, disconnecting may help to re-establish a secure connection. Additionally, if the account is not properly configured or is missing required information, disconnecting the account can help to update and configure the account properly.

1. Open the Settings app by clicking on Windows + I keys together.

2. Now, click on Accounts.

click on Accounts setting

3. Now, switch to the Access work or school tab and click on your account.

4. Then, select your account and click on Disconnect.

Then, select your account and click on Disconnect button

5. Wait until the account is disconnected from your PC and login to Office again using your credentials.

Method 4: Clear Client Credentials

Clearing client credentials helps to fix Microsoft Office error code 30088 26 by removing any corrupted or outdated authentication information. This ensures that the authentication process is correctly completed, allowing the user to gain access to the desired program or content. Additionally, it can help eliminate any potential conflicts between different programs or services, as well as any issues that are caused by incorrect or expired credentials.

1. Hit the Windows key and type Credential manager. Then, click on Open.

open credential manager

2. Now, click on Windows Credentials as depicted.

click on Windows Credentials

3. Now, expand the drop-down menu next to Office 365/Teams and click on Remove option.

expand the drop down menu next to Office 365 Teams and click on Remove option. Fix Office Update Error 30088 26 on Windows 10

4. Now, click on Yes if you are prompted and re-login to your Microsoft Teams account.

Also Read: Fix Microsoft Office Not Opening on Windows 10

Method 5: Remove Account and Device

Removing the account and the device helps to fix error 30088 26 as it helps to reset the synchronization settings. This can help to reset the authentication process which may have caused the error. Additionally, resetting the settings will help to reduce any network or firewall-related issues that could have been causing the error.

Follow our guide on How to Close and Delete Your Microsoft Account to delete your Microsoft account on your device.

Remove the Account and the Device

Now, to delete your device, follow these steps.

1. Hit the Windows key, and type cmd.

2. Click on Run as administrator to open the command prompt with admin rights.

3. Now, enter the following commands one by one and hit Enter key after each command.

dsregcmd /leave 
dsregcmd /status 

4. Once the commands are executed, register your device again and this method will fix the discussed issue on your device issue.

Method 6: Repair Office Installation

Repairing an Office installation helps to fix error code 30088-26 because it can replace corrupted or missing files, identify and replace corrupted settings, and help to reset any incorrect settings that may have been causing the error code. Additionally, repairing Office can help identify and remove any malicious software or viruses that may have been interfering with the proper functioning of Office.

Using Repair Wizard to fix the discussed error is necessary because it is the most efficient and reliable way to solve the issue. It is also the safest way to ensure that the problem is fixed without causing any further damage to the system.

1. Open the Windows search bar, type and launch Control Panel, as illustrated below.

Open Control Panel

2. Set View by > Category and click on Uninstall a program option under Programs, as shown highlighted.

select uninstall a program

3. Right-click on the Microsoft Office program and select Change.

Note: Here we have shown Microsoft Office Professional Plus 2016 as an example.

right click on microsoft office and select change option in programs and features uninstall a program menu .fix Office error 70003

4. Choose the Repair option and click on Continue.

Choose the option of Repair to open Repair Wizard window. Fix Office Update Error 30088 26 on Windows 10

5. Follow the on-screen Repair Wizard to complete the process.

Also Read: Fix Office Activation Error Code 0xC004F074

Method 7: Reinstall MS Office

Reinstalling Microsoft Office can help to fix this error code because this error can be caused by a problem with the installation of the software. When you reinstall the software, it replaces any files that may have been corrupted or deleted and can help to correct any issues that were preventing the software from working correctly.

Note: Implement this method only if you have the required MS Office Installation Disk or Product Code.

1. Navigate to Control Panel > Uninstall a program, using Steps 1-2 of Method 3.

select uninstall a program

2. Right-click on Microsoft Office program and select Uninstall.

Note: Here, we have shown Microsoft Office Professional Plus 2016 as an example.

right click on microsoft office and select uninstall option in programs and features uninstall a program menu

3. Follow the instructions given by Uninstall Wizard.

4A. Now, download and install Microsoft Office 365 through the official website.

Purchase and Install Microsoft Office through the official website. Fix Office Update Error 30088 26 on Windows 10

4B. Or, use MS Office Installation CD.

5. Follow the Installation Wizard to complete the process. Check if you have fixed Office update error 30088 26 error on your device.

Method 8: Use Office 365 Online

Office 365 offers real-time collaboration and communication, enhanced security and data protection, and access to the latest versions of Word, PowerPoint, Excel, Outlook, and other Office applications. With Office 365, users can quickly and effectively identify and address the root cause of a given error code, and can easily implement the necessary fixes to keep their Office suite running smoothly and error-free.

1. Open your browser and navigate to Microsoft 365 login page.

Use Office 365 Online

2. Click on the Sign in button and log in with your credentials.

Also Read: Fix Office 365 activation error We couldn’t Contact the Server

Method 9: Contact Microsoft Support

Microsoft Support offers knowledgeable and experienced professionals that are familiar with the error code 30088 26. They can help you troubleshoot and determine the root cause of the problem. Microsoft Support also provides a variety of tools and services that can help you find a solution quickly. This includes access to the latest Microsoft software updates, technical support databases, and access to knowledge base articles.

Additionally, Microsoft Support provides access to online chat and support forums where you can ask questions and get help from other Microsoft customers. Contacting Microsoft Support will help ensure that you get the best and most up-to-date information and support to help you fixthis error on your PC.

Contact Microsoft Support


Error code 30088-26 is a common error code associated with Microsoft Office, and it can be a frustrating experience for users. Let us know which method worked for you the best. If you have any queries or suggestions, then feel free to drop them in the comments section.

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