The KB3114409 update (from late 2015) triggered an Outlook error in which the email software only starts in Safe Mode for some users. Consequently, some users can’t open Outlook in its standard mode. The software starts without custom toolbar settings or extensions in Safe Mode, and users can’t save preferences or templates. These are some of the resolutions that might fix Outlook applications that only start in Safe Mode.

Fix Outlook When Only Starts in Safe Mode

  1. Turn Off Outlook Add-ins
  2. Install the KB3114560 Update
  3. Roll Back Windows 10
  4. Run a Scanpst.exe Scan
  5. Deselect the Run this Program in Compatibility Mode Setting

1. Turn Off Outlook Add-ins

Outlook might start in Safe Mode when there are antiquated add-ins conflicting with the software. Therefore, turning Outlook add-ins off might fix the software starting in Safe Mode. Users can turn off Outlook add-ins as follows.

  1. Click the File tab in Outlook.
  2. Select Options to open an Outlook Options window.
  3. Click Add-Ins on the left of the window.
  4. Select Com Add-on on the Manage drop-down menu.
  5. Press the Go button.
  6. Deselect all the add-ins listed on the COM Add-ins window.
  7. Press the OK button.
  8. Then restart Outlook.

2. Install the KB3114560 Update

As mentioned, a KB3114409 update was responsible for Outlook 2010 starting in safe mode for some users. Consequently, Microsoft released a KB3114560 update that fixes Outlook starting in Safe Mode. Thus, installing that update might resolve the issue for Outlook 2010 users at least.

Click Download update KB3114560 for the 64-bit version of Outlook 2010 on the update’s page to get the installer for the update. Users with 32-bit Outlook will need to click Download update KB3114560 for the 32-bit version of Outlook 2010 instead. Then press the Download button, and open the installer for the update.


3. Roll Back Windows 10

As updates are known to be responsible for Outlook starting in Safe Mode, rolling back Windows 10 to an earlier date is another potential resolution. That will undo both Windows and application updates after a selected restore point. Thus, users can restore Outlook to a time when it didn’t always run in Safe Mode. Users can roll back Windows 10 with System Restore as follows.

  1. Press the Windows key + X hotkey.
  2. Select Run to open that accessory’s window.
  3. Input ‘rstrui’ in Run to open System Restore.system restore
  4. The System Restore window might include a Choose a different restore option. If it does, select that option; and click the Next button.
  5. Select the Show more restore points checkbox to get the full list of restore points.system restore choose restore point
  6. Then select a restore point that might restore Outlook to a time when it didn’t always open in Safe Mode.
  7. To get an overview of what software (and updates) are deleted for a restore point, press the Scan for affected programs button.system restore windows update
  8. Select the Next option, and then click Finish. Windows will then roll back to the restore point.

4. Run a Scanpst.exe Scan

Outlook might start in Safe Mode if the PST file for it is corrupted. Users can fix corrupted PST files with the Scanpst.exe utility for Outlook. Follow the guidelines below to scan the PST with Scanpst.exe.

  1. First, close Outlook if it’s open.
  2. Open the File Explorer by pressing the Windows key + E hotkey.
  3. Then open the Office folder in File Explorer, which will probably have a C:Program Files (x86)Microsoft OfficeOffice15 (for Office 2015) file path. Alternatively, users can enter ‘scanpst.exe’ in Cortana to search for Scanpst.exe.
  4. Click Scanpst.exe in the Office folder to open that utility’s window.outlook inbox repair
  5. Click the Browse button to select the PST file. The PST files are usually in the DocumentsOutlook files folder for an Outlook profile.
  6. Press the Start button to initiate the scan.
  7. Select the Repair option to fix a corrupted PST.

5. Deselect the Run this Program in Compatibility Mode Setting

Some users have confirmed that deselecting the Run this program in compatibility mode option fixed Outlook starting in Safe Mode. So, if Outlook has been configured to run in compatibility mode, that resolution might just fix the matter. Users can deselect the Run this program in Compatibility mode setting for Outlook as follows.

  1. Open File Explorer’s window.
  2. Open the Office folder in File Explorer, which will probably be in the C:Program Files (x86)Microsoft Office folder for most users.
  3. Then right-click Outlook.exe in the Office folder to select Properties.
  4. Select the Compatibility tab shown in the snapshot directly below.outlook properties compatibility
  5. Deselect the checkbox for the Run this program in compatibility mode option.
  6. Select the Apply option.
  7. Then click OK to close the window.
  8. Thereafter, click Outlook.exe in the Office folder to launch the application.

Those are some of the best resolutions that might fix Outlook starting in Safe Mode. In addition to those resolutions, setting up a new Outlook user profile might also fix the issue.

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