Unable to add or edit recurring calendar events. Error code:4000:C401?

This is the second time I've posted this question. On the he first submission I was asked for more info, which was supplied, but the question was never answered.

When I try to add or edit recurring calendar events, I get the following "It seems that we were not able to validate your login credentials . Please try again after logging out and logging back in again. Error code:4000:C401". I have logged off and back on, but still not able to add/edit calendar events.


Additional Details
This is happening on my desktop computer running Windows 7 Home Premium, Service Pack 1. I’ve tried it with Chrome 26.0.1410.64 and IE 8.0.7601.17514, resulting in the same error message.

I’m getting an error when I try to add an event or edit a recurring event.

Steps taken:
If a new event: Clicked New Event button, Entered information for the event, Clicked Save.
If an existing recurring event: Clicked the existing recurring event, Clicked Edit, Made changes, Clicked Save.

Error Message:
“We’re sorry! Something went wrong…
It seems that we were not able to validate your login credentials . Please try again after logging out and logging back in again. Error code:4000:C401”

I logged out and back into my Yahoo mailbox and got the same errors.

Darcy Fitz2013-05-21T11:34:18Z

Favorite Answer

I am very sorry that I missed your previous response, Karen! Thanks to your excellent and detailed information, I was able to replicate this. I have compiled the information in your case, and sent it to our engineering team for further investigation. I would like to reassure you that we will our best to have a resolution in place as soon as possible. Unfortunately, at this time I can't offer you a solid estimate as to when this issue will be resolved, but we are working very hard to resolve this for you!

I appreciate your patience while we correct the issue and I apologize for any inconvenience.

27 Cities. 20 Music Acts. 10 Comedians.
Come join us at http://music.yahoo.com/on-the-road

01

?2013-10-21T15:16:27Z

I see this question was created 5 months ago and I just tried to save a new event (10/21/2013) and it still not working. I'm getting Error code:4000:C401 through Google Chrome. IE didn't give an error code, but it just didn't save anything at all.

00

?2016-11-05T07:39:36Z

I basically created a clean team and am having a similar situation. Used 2 diverse computers and browsers, no substitute. i'm the mod and don't even see the upload adventure button on the calendar. the sole option below "strikes" in calendar is print.

00

Willis M2015-12-18T08:56:20Z

I am not getting an error code, but trying to post a new event in Our group calendar, and I continuously get the error message "Your access to this calendar is being processed. Please check back later."

00

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