Urgent Support Required: Hyperlink File Opening Failure & Rollback Error in Microsoft 365 (Error 30088-29)

Hi Anees,

The error code Error code 30088-29 means an update or installation process has failed, which means your attempt to roll back using OfficeC2RClient.exe has failed. That said, I highly recommend using Office Deployment Tool instead of OfficeC2RClient.exe since the ODT gives you more control when rolling back.

Please follow the steps in this thread to roll back your Office version:

Note: You can watch this tutorial video to easily follow the below steps: https://youtu.be/3KUlOsN1IAI?si=sKOk-YkSu-f-2v23

(This is a non-Microsoft website but the page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.)

Step 1: Download and Extract ODT 

• Download the .exe file from Download Office Deployment Tool from Official Microsoft Download Center 
• Run it to extract two files: setup.exe and configuration.xml (sample) 

Step 2: Create Your Custom Configuration File 

• Open Notepad and paste the following XML:

<Configuration>  
<Updates Enabled="TRUE" TargetVersion="16.0.xxxxx.yyyyy" />  
</Configuration> 

• Replace the xxxxx.yyyyy part with the exact build number of the previous version that you prefer. For example: if you want Version 2604 Build 19929.20172, replace xxxxx.yyyyy with 19929.20172
• You can find the version list from Update history for Microsoft 365 Apps (listed by date) - Office release notes | Microsoft Learn

• After that, save the file as Config.xml in the same file location as the Setup.exe file in step 1

Step 3: Run the Installer 

• Open Command Prompt as administrator, navigate to the folder in step 2 where setup.exe and your XML file are located, then run: 

setup.exe /configure config.xml 

• This will install the specified version of Office/Excel. 

Step 4: Disable auto updates

• Open PowerPoint. 
• Go to File > Account > Update options. 
• Select Disable updates to prevent reverting to newer versions. 

In case the issue still persist or you still fails with rollback attempt, I strongly recommend submitting a support ticket directly to Microsoft for further investigation. This route ensures you can contact a support agent, who can conduct a remote session to review the issue in detail, validate backend configurations and run any required synchronization or diagnostic tools. If necessary, he/she can help escalate this situation to a specialized/high-tier team for more in‑depth analysis and resolution.

I genuinely wish I could directly review the backend systems to diagnose and resolve this issue for you. However, as a forum user, I can only provide general guidance, sharing applicable resources, and directing you to the appropriate support channels so you can work with the right team to investigate further. That said, this option is the most effective approach I can provide so you can receive the most correct, specialized support for this situation.

To create a support ticket:

• Go to Microsoft 365 Admin Center > Support > Help & Support
• Turn off the "Support Assistant" feature.    
• Use the keyword "Support" to quickly bypass automated suggestions > Select Contact Support.  
• In the ticket description, please clearly describe the issue, including any error messages and the steps you’ve already tried. You can also attach screenshots or screen recordings.  
• Additionally, sharing your preferred contact times may help the support team handle the case more efficiently.

If you're an end-user and do not know who is your IT admin, kindly refer to this article: How do I find my Microsoft 365 admin? - Microsoft Support 

I hope this information is helpful. Should you have any further questions or need additional assistance, please feel free to share them in the comment below. I'm very happy to help.  

Thank you for your cooperation and understanding.

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