SOLVED: Outlook error in the underlying security system

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Updated: Dec 6, 2021

Posted: Aug 2020

An error in the underlying security measure completely blocks your Prospect email access.
The solutions we suggest below are easy enough to be followed past anyone to fix this issue.
Find more guides and tutorials in our Outlook Hub.
Scroll through the Troubleshooting Thomas Nelson Page for a lot of useful advice on getting your apps and devices upbound and running.

Emailing is surely an everyday activity for most PC users, whether for personal or line purposes. Moreover, users prefer sending emails using email clients rather than webmail.

MS Outlook is one such popular client, but numerous complained of experiencing certain problems.

For illustration, they get An error occurred in the underlying security system scheme . The supplied handle was shut-in when difficult to post an email in MS Outlook.

This misplay prevents users from accessing Outlook data files, American Samoa well as sending emails.

How can I fix Outlook security measure errors?

Restart your Internet connection
Create a new Prospect profile
Set the Inbox folder
End complete Outlook related processes
Switch off the antivirus software
Switch off Windows Firewall
Bunk Outlook in Sound Mode
Increase the Server Timeouts setting in Outlook
Utilization mutually exclusive netmail software package

1. Re-start your Internet connective

Firstly, a quicky you mightiness want to try is to resume your Net connector. Sometimes, your ISP might be having issues, therefore, you might want to consider changing your ISP, besides.

However, to tab if the joining is very down, try to entree a website in your browser. If you're unable to access code it, then the come out is obviously attributable a connective error. So restarting the Internet joining power fix the problem.

2. Create a new Outlook profile

Conjur Windows Key + X and chooseControl Panel from the list.
Open Mail.
When the Mail Frame-up window opens, click on She Profiles button.
Click the Add button.
The New Profile windowpane bequeath appear. Select E-mail Account, enter your profile public figure and the required invoice information. Click Next.
Click Finish and your account will be created.

By default, the above steps leave create an IMAP account statement, if the email server supports it.

However, you lav as wel manually configure your netmail account, merely early you take to locate your Outlook data file. To answer that, follow these stairs:

Open Control Panel and click on Mail.
When the Mail Setup window opens, click on Show Profiles.
Select your current Outlook visibility and click on Properties.
Dog on Data Files.
In Account Settings, attend the Data Files tab. You should see the refer and the location of the data file. Call back the location of the information file because you'll need it for later steps.

Likewise, you can configure your email account manually, by doing the following:

Attend Instrument panel and select Ring mail.
Flick on Show Profiles and choose Add.
Enter the visibility name and click OK.
In the Add New Account windowpane pick out Manually configure server settings or additional server types and click Next.
In the Choose service dialog corner, prize Internet Netmail, and click Next.
Enter your account details in the Internet E-mail Settings window.
In Have new messages to section, take Existing Mindset Data File, click Browse, and situate your data file.
Click Next. Your revolutionary Expectation profile should be successfully created.

As an alternative, you can back up your data file and delete your Mentality profile before creating a new 1 and linking IT to the data file out.

Creating a rising profile will remove altogether your settings, but information technology should desexualize the Outlook error in the underlying security system job.

3. Set the Inbox folder

In Mentality, go to File then to Account Settings.
Click Change Folder and the + sign next to the pamphlet name to exposit it.
Click Inbox, then OK.
Close Account Settings and click the Send and Receive clitoris.

Alternatively, you terminate create a distinguishable leaflet that can personify used to store your emails.

This solution might be helpful since the Outlook underlying security measure wrongdoing rear end come if the Inbox folder isn't specified.

4. End all Lookout related processes

Type Task Manager in the household covert search banish, and hit Infix.
Now, locate Prospect-concerned processes(some processes that have Lync, Communicator, ucmapi, or Outlook).
Right-click on each, so Final stage task.
Restart Expectation afterward, and check if the problem is solved.

Ending all Outlook processes running in the background should solve the job. However, if you still get the error, proceed to the next solution.

5. Switch disconnected antivirus software

Right-tick the Windows 10 taskbar and select Task Handler.
Choose the Task Manager's Startup tab key.
Now, select your antivirus service program, and campaign the Disable push button.

Alternatively, the antivirus software can be handicapped by right-clicking its system tray icon and selecting a incapacitate, pause, or exit option.

6. Switch over off the Windows Firewall

In the explore bar, type Windows Firewall to open Windows Defender Firewall.
Click Turn Windows Firewall on operating theater off .
Take both Turn off Windows Defender Firewall options on that point, and then press OK.
Alternatively, you tin check if Outlook is permitted through the Windows Firewall by clicking Allow an app Beaver State feature direct Windows Defender Firewall.
Press Change settings, then scroll to Outlook in the Allowed apps list.
Select both Prospect's checker boxes if they are not ticked.
Then press OK to support the new scene.

7. Run Prospect in Safe Mode

Press the Win key + X simultaneously.
Choose Run from the menu.
Type Outlook /unhazardous in the text box seat, and press Hunky-dory.
A Choose Profile window will open. Urge the Fine button.

Just like with other applications, Lookout's Safe Mode can be accustomed resolve errors. Among them, the inexplicit security system issue.

8. Increase the Server Timeouts setting in Mind-set

In Outlook, select File, then Score Settings.
Press the Change and More Settings.
Click the Front tab, and then drag the Sever Timeouts bar to the far right field.
Press the All right button to close the windowpane.

The Server Timeouts computer menu canful fix interrupted connections issues and can help with sorting out the underlying security measure error.

9. Expend secondary email software

If you're displeased Outlook's unlooked-for errors, there are many great option email clients available that you can try. And our top suggestion therein particular case isMailbird.

Presently, Mailbird is one of the just about popular netmail clients given the many integrations with other apps the like Google Calendar, Chirrup, Beaver State Asana. This allows users to manage their emails from a single, unified comfort.

Besides, the receivers bottom use whatsoever other email customer and still be competent to imag messages dispatched concluded Mailbird. The tool around does not require them to install extra extensions or plugins.

To conclude, these are applicative solutions that should fix the Outlook error in the basic protection organization thusly that you can resume sending emails.

If you take dependable other troubleshooting methods or if you have any questions concerning this topic, let U.S.A know by commenting under.