Disable Microsoft sign in pop-up

Question

We save files to an external SharePoint site and occasionally get this sign in pop up that stops the upload process. We do not need to sign into an account (if we close this sign in popup the files upload without issue) so is there any way to disable the pop-up request or possibly a PowerShell script to detect and close it? Nothing we've tried so far has worked. If there is a script that can detect this and either sign in or close, then that would be extremely helpful as well.

Answer 1

Uploading through an incognito or private window in your browser prevent the pop-up.

Corrupted cache data can sometimes trigger unnecessary login prompts. Try clearing your browser cache and cookies for the specific SharePoint site.

While a PowerShell script to automatically sign in isn't recommended due to security concerns, a script to close the pop-up might be a possibility.