Tell us the account you want to use to open _vti_rpc.

I decided to try on my other workstation, same OneDrive accounts connected, same office 365, Autosave also disabled and greyed out. Problem was unfortunately not resolved. I would really like a response from Microsoft, perhaps I can supply more logs or more information which would be beneficial to resolving this issue.

not working for me. I continue receiving the pop up when closing any word document.

Office was upgraded and now the autosave is off and greyed out.

the problem continues.

This helped for about a day

Hi.

This solution worked for me.

Microsoft Word attempts to open _vti_rpc upon exiting

1. File>Account>under User Information, sign out all the existing account and exit all Office apps.
2. Control Panel>User Accounts>credential manager>Windows Credentials, remove all Office 365 credentials that look like: MicrosoftOfficeXXData:XXXXXXXXX
3. Remove also the "OneDrive Cached" credential.
4. Restart your PC.
5. Open Word and sign in again with your Office 365 account.
6. Open your documents then close to see the result.

I just did that. Get Updates gives no result. Update is probably not available for everybody (every language).

I'll wait a little longer...

Ronald 

Netherlands