Getting error when attempting to open outlook

Joe Bagazinski 0

Correlation Id: 7c23bfd5-319a-4796-be8c-f7a1169340f4 Timestamp: 2024-02-08T12:55:51.000Z DPTI: 3aad60434f27d0dc3afbaee637f0000d16c7867a8c8b9fc1667cee5f12105065 Error Tag: 4wbr5 Error Code: 2147943811

Mike Carey 10 Reputation points

2024-10-24T16:08:28.3733333+00:00

This is happening to me every couple of days- very frustrating. What is causing this and what is can be done to resolve it?
Ejenakevwe, Andrew 0 Reputation points

2024-12-02T02:30:15.9033333+00:00

I am also having this same issue. Is it a problem from microsoft?
Marko Gluhak 0 Reputation points

2024-12-31T10:33:42.09+00:00

I hav same problem going back 2 weeks. If I do not restart PC for couple days I get this error and can not sync email anymore. After restarting PC it works again.
Daisy Brown 0 Reputation points

2025-02-28T16:39:08.2466667+00:00

We started to see these this month with Outlook. Tried everything and more we've found on the web. It affects just one of our MSP companies, which is odd, and the number of users there is increasing by the day (they have over 400 users). We opened a ticket with Microsoft support and they said it was something to do with the Exchange side, they are working on it, and could be a week or two. Except, there's all posts across the web since October or November for the same error tag and error code. It's clear something they have known about for a while and it's not going to be just one or two weeks. Things we try help the user for a day but the next morning it's right back to it. It happens on PCs but they can still use email through Outlook mobile app on phones and OWA. If it was Exchange, wouldn't it be affecting those too? Has anyone found something that solves this?

2 answers

Faery Fu-MSFT 19,271 Reputation points Microsoft Vendor

2024-02-09T05:54:03.79+00:00
Hi @Joe Bagazinski ,

Please close all Microsoft applications (Such as Office, Teams, OneDrive etc).

Search %AppData% in Windows Search box, and navigate to Microsoft folder (C:\Users<yourusername>\AppData\Local\Microsoft)

Cut the OneAuth and IdentityCache folders out of the Microsoft folder and paste them onto your desktop.

Relaunch Outlook and sign in. If the issue persists, close Outlook, copy the OneAuth and IdentityCache folders back into the Microsoft folder, when it asks if you want to overwrite, say NO.

Relaunch Outlook and sign in again to have a check.

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1 person found this answer helpful.
Mohan Singh 10 Reputation points

2024-06-24T13:40:39.7466667+00:00

While this answer solves the problem, I am in an Enterprise environment where this keeps occuring to users on a random basis. Is there something causing this, and is there a more permanent way to address this?

Sibren Devos 0 Reputation points

2024-10-16T12:33:06.6933333+00:00

this is also happening here at random times and with different users.

This problem is causing a lot of trouble

Alessandro Marchesi 0 Reputation points

2025-01-02T14:38:17.6866667+00:00

Good morning, I also have the same problem, randomly and randomly the client apps disconnect.I tried the procedure indicated but with negative results. Now we are using microsoft's Graph script, to restart the tokens. Below is the link https://developer.microsoft.com/en-us/graph/graph-explorer But the problem appears days later. You help Me ? Thaks
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Claudio Stregapede 0 Reputation points

2025-01-07T08:56:23.0366667+00:00

Morning everyone,
We're also in an Enterprise environment (IT Support) and the problem has spread to dozens of users just over the past few days.
Until it was limited to a few users / PCs, I solved it "temporarily" by invalidating the tokens on MS Graph with the command:
"https://graph.microsoft.com/v1.0/users/*****@domain.com/invalidateAllRefreshTokens".*

Parallel to the problem, we noticed in the TaskManager a large number of processes called “API for MDM Enrollment ” as if they were the loop. I don't know if these two things are related.

We also tried to reinstall the WAM plug-in and cleaned all the caches in the Broker plug-in, but the problem is not fixed.

We absolutely need to understand and solve this problem that does not allow us to work.

Thank you
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Nick Wylie 0 Reputation points

2025-02-27T22:15:08.26+00:00

MSP here. We have had (1) client having this 4wbr5 error spread to multiple workstations as well and cannot figure out a fix for this either. One user fixed it by switching to "New Outlook", but New Outlook has too many quirks at this time (such as with sharing a OneDrive link and getting errors...) so we reverted back to Classic Outlook. The error went away for 1 day but now it comes up every few hours for the end user.

We have a ticket in with Microsoft enterprise support as well but have yet to get a cause or resolution
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Getting error when attempting to open outlook

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