Can't open my Sharepoint files, although I can see them

Question

I can see my files in the Sharepoint and in OneDrive, however, I get an error message when tryng to open them. They don't open at all

Answer 1

Important Note on Privacy: To protect your personal information in this public forum, I have redacted your sensitive details from your previous reply.

Dear @Salum Salum, 

Thank you for posting your question in the Microsoft Q&A forum.  

As a moderator, I don't have the tools to investigate your specific account directly because this is a user-to-user support forum. Moderators and contributors, including external Microsoft employees, cannot directly intervene in Microsoft product features or access back-end systems. Our role is limited to providing technical guidance on reported issues, requests, or ideas. However, I will try my best to guide you as clearly as possible.   

First, could you please help me clarify some details: 

I understand that you can see your files in OneDrive and SharePoint, but you encounter the 'This site can’t be reached' error specifically when trying to open them. Usually, this error suggests a connection issue to the site itself; however, since you can see the file list, you clearly have access to the site. To help me understand your situation better, could you please confirm that did you access to the site or not? 

I have looked into the error message you provided and found the following information: ERR_INVALID_RESPONSE error when accessing SharePoint site - SharePoint | Microsoft Learn 

Could you please provide screenshots of your SharePoint site and OneDrive so I can verify the files are there? Additionally, please send a screenshot of the error message that appears when you click on a file. 

I also have a few follow-up questions to help pinpoint the issue: 

• Are you using the OneDrive desktop app or the web version? 
• Does the issue happen in both locations, or just one? 
• Could you try opening the file directly from the OneDrive desktop app to see if it works? 
• Are these your own files, or were they shared with you by someone else? 
• Could you try opening the files in an Incognito/Private window or a different browser? 
• Are other colleagues able to open these files normally? 
• Is this happening with all files, or just a specific one? 

Please help me answer these questions so we can find the root cause. Once I have that info, I can provide the specific steps suited to your case. 

I look forward to your cooperation and response.