Microsoft Outlook bug prevents viewing or creating email worldwide - BleepingComputer

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Outlook

A Microsoft Outlook update released today for the desktop client introduced bugs that prevent users from creating or viewing mail.

Today, Microsoft released Outlook version 2104 build 13929.20372, and after installing the update, users of the click-to-run desktop client found that they could no longer properly view emails or create new ones.

When attempting to view an email, instead of seeing the entire message body, they only see a small portion or a single line of the email message, as shown below.

Missing Outlook email contentMissing Outlook email content
Source: BleepingComputer

To make it even more frustrating, when creating a new email message, every time you press enter, all the previously written content will be removed, as shown below.

Outlook email text disappearing when you press enterOutlook email text disappearing when you press enter
Source: BleepingComputer

The Microsoft 365 Status Twitter account has tweeted that they are investigating an issue with "email message visibility in Outlook," and that Outlook on the Web is unaffected.

Microsoft 365 tweet

In an incident status message in the Microsoft 365 Admin Center titled 'EX255650: Issue affecting viewing email content in Outlook', Microsoft suggests users use web and mobile clients until the issue is resolved.

Title: Issue affecting viewing email content in Outlook

User Impact: Users may be unable to view email message content within Outlook.

More info: Initial reports indicate that Outlook on the web is unaffected and users with access to Outlook on the web can view email messages there while we work on a solution.

Current status: We're gathering and analyzing data in an effort to isolate the cause of impact. Initial reports indicate that impact is specific to the Outlook client and users with access to other protocols, such as Outlook on the web or the Outlook mobile app, can view message content in those platforms as a potential workaround.

Scope of impact: This issue could affect any user attempting to view an email message in the Outlook client.

How to fix the Microsoft Outlook issues

If you are experiencing this issue in Microsoft Outlook, users have reported that you can fix the bug by rolling back to a previous Microsoft Outlook version.

BleepingComputer has tested this method, and it resolved the problems in our Outlook desktop client.

Method 1: Roll back Microsoft Office to latest April 2021 release

To roll back to the April 23rd, 2021, release and fix the Microsoft Outlook problems, please follow these steps:

Open a command prompt by clicking on the Start Menu and typing CMD. When the 'Command Prompt' result appears, click on it. In the command prompt type cd "C:\Program Files\Common Files\microsoft shared\ClickToRun" and press enter. You will now be in the ClickToRun folder. Type officec2rclient.exe /update user updatetoversion=16.0.13901.20462 and press enter.
Entering commands in Command PromptEntering commands in Command Prompt
Microsoft Office will now download the specified version of Microsoft Office and roll back to that previous version. Please be patient as this may take a few minutes or longer, depending on your computer and Internet connection speed.
Rolling back Microsoft Office to the previous versionRolling back Microsoft Office to the previous version
When the updates are finished installing, you will be shown a screen stating 'Updates were installed.' You can press the Close button on this screen.
Microsoft Office updates were installedMicrosoft Office updates were installed
Microsoft Outlook will now be rolled back to the previous version, and you should be able to start Microsoft Outlook again. You can now close the Command Prompt by clicking on the X button.

Method 2: Start Microsoft Outlook in Safe Mode

If you do not want to roll back to a previous version of Microsoft Office or cannot find the ClickToRun folder,  you can launch Microsoft Outlook in Safe Mode to fix the bugs until an update is released.

It should be noted that when starting Outlook in Safe Mode, all add-ins will be disabled, including security add-ins.

To start Outlook in Safe Mode, please follow these steps:

Press and hold the Ctrl key on your keyboard and then launch Microsoft Outlook. Outlook will proceed to start and then ask if you are sure you wish to start in safe mode.
Do you want to start Outlook in safe mode?Do you want to start Outlook in safe mode?
You should now press the Yes button and Outlook will start in Safe Mode with add-ins disabled. Once Outlook starts, you can confirm you are in Safe Mode, as the title of the Outlook window will state "Microsoft Outlook (Safe Mode)", as shown below.
Microsoft Outlook started in Safe ModeMicrosoft Outlook started in Safe Mode
When done using Outlook, you can simply close the program.

It should be noted that you need to repeat this procedure every time you want to start Outlook in Safe Mode.

Please let us know if these methods work for you.

This is a developing story.

Update 5/11/20 6:32 PM EST: Added Safe Mode instructions non-ClickToRun Outlook users.

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