Forum Discussion

Copper Contributor

Dec 13, 2021

Outlook Desktop M365 error: "This is not a valid file name." when sending email with no attachments

Latest version of Office Desktop - for some new email, when we reply, we get an error message popping up: This is not a valid file name. There is no attachment on the email, we're just replying to t...

office 365

outlook for windows

Altabear

Copper Contributor

Dec 16, 2021

gt-sea

I've been having this same issue for a couple of months now. Desktop Outlook 365. For me, it's when I try to forward an email.

ITGDaryl

Copper Contributor

Dec 20, 2021

Exactly this! we need Microsoft on this, we need a fix!