Hello @Arianna,
Thank you very much for your updates via private message.
I believe that many users may encounter similar issue, and your case could serve as a valuable reference for them. Therefore, I would make a brief summary of this post so that other forum members could easily find useful information here:
Issue Description
Starting last week, OP team’s shared Excel spreadsheet hosted on OneDrive began showing a generic error message when attempting to insert rows or copy/paste rows within the document:
"We're sorry. We ran into a problem completing your request. Please try that again in a few minutes."
This issue persists even when creating a brand-new spreadsheet under the same shared OneDrive environment.
Assessment
The error appears to be linked to the shared OneDrive environment or its permissions/configuration. The fact that the same issue occurs with newly created spreadsheets suggests it’s not file-specific but possibly related to the shared workspace or account settings.
Workaround
OP created a fresh spreadsheet using your personal OneDrive account, then uploaded it to the main shared OneDrive. This workaround allowed OP's teammates to add rows successfully, indicating that the issue may be isolated to the original shared environment.
As other users will also search information in this community, your valuable vote will definitely also help other users who have similar queries easily to find the correct channel and useful information more quickly.
Greatly Appreciate again for your patience and understanding.