Hi @Xuân Thắng ,
According to your description, it seems that you are getting throttled or blocked.
Below is a quick summary of the best practices to handle throttling:
- Reduce the number of concurrent requests
- Avoid request spikes
- Choose Microsoft Graph APIs over CSOM and REST APIs when possible
- Use the
Retry-After
andRateLimit
HTTP headers - Decorate your traffic so we know who you are
For more information, please refer to: https://learn.microsoft.com/en-us/sharepoint/dev/general-development/how-to-avoid-getting-throttled-or-blocked-in-sharepoint-online#what-should-you-do-if-you-get-blocked-in-sharepoint-online
And there is a workaround you can give a try:
Ask your admin go to the M365 admin center, click the "Create link to files" under OneDrive.
Then click the generated link, if he can access your OneDrive, you can ask her to download the file for you.
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