Outlook The file username ost is in use and can’t be accessed

Outlook is an electronic mail and calendar software program obtainable as part of the Microsoft Workplace suite. It lets you ship and obtain electronic mail messages and observe your process. It makes use of an OST file which is the Outlook information file when you’ve got an Alternate account and wish to work offline. At instances, customers have seen the “The file username ost is in use and can’t be accessed” error when launching Outlook. Should you additionally face this error, then on this article, we now have recommended some strategies to repair this error.

What causes The file username ost to be in use and can’t be accessed errors in Outlook?

In case you are going through the “Outlook file username.ost is in use and can’t be accessed” challenge, there could also be a number of causes behind this error. Beneath we now have given some causes.

• It happens if the .ost remains to be used or locked by the opposite course of.
• It could occur from a battle between the Outlook software and different recordsdata.
• It could occur, If the method Communicator, ucmapi.exe, and so forth. are working within the background.
• This error may also happen resulting from an absence of synchronization between the OST file and the Alternate mailbox.

Outlook, the file username ost is in use and can’t be accessed

Should you see The file username.ost is in use and can’t be accessed message whereas logging into Outlook, then right here we now have given some strategies to repair this challenge :

1. Restart your system and router
2. Disable Cached Alternate Mode
3. Finish All of the Outlook-related process
4. Restore OST file with Inbox Restore Instruments

Let’s use this technique one after the other to repair this error.

1] Restart your system and router

Restart your PC and your web connection and see if that helps.

If potential, use one other web connection and see.

2] Disable Cached Alternate Mode

If restarting the system doesn’t assist you repair this error, you may attempt to Disable the Cached Alternate Mode possibility to repair this challenge. It can assist customers to work offline in Outlook. Now, comply with the under steps to disable this feature.

1. Launch the Outlook software and click on on the File possibility within the higher left nook.
2. Select Account Settings and click on on Account Settings.
3. Go to the E-mail tab and choose your account.
4. Click on on the Change tab.
5. Now, you will notice Offline Settings.
6. Uncheck the field for the choice Use Cached Alternate Mode.
7. Restart the Outlook software to save lots of the change.

Observe: Don’t overlook to show “Use Cached Alternate Mode”  ON if this error just isn’t fastened.

3] Finish MS Outlook and associated software

If the above strategies don’t assist, then you may attempt to shut or finish MS Outlook and associated functions. You need to ensure that no Outlook software is working within the background. Now comply with the under steps to do that.

1. Navigates to the Home windows search bar, kind Job Supervisor, and open it.
2. Go to the Course of tab.
3. Search for the identify Communicator, Outlook, Groups/Lync, or UCMAPI.
4. Should you get any choices associated to the applying talked about right here.
5. Then, choose them after which click on on the Finish process button within the backside proper.
6. Now, Restart your system to save lots of the change.

Attempt to open Outlook once more. Hopefully, it’s going to work tremendous now.

4] Restore OST file with Inbox Restore Instruments

When all of the strategies proven above don’t repair this challenge associated OST file, then perhaps your OST file will get corrupted. On this case, that you must restore the OST file with Inbox Restore Instruments. Microsoft has supplied the Inbox Restore Software, which helps you to recuperate the folder and gadgets from an offline folder or .ost recordsdata. It additionally helps to regain gadgets from corrupted private folders or .pst recordsdata.

How do I repair Outlook OST that can’t open?

Listed below are a couple of steps to repair the Outlook OST file that can’t open. These are:

1. Kill all of the Outlook-related course of
2. Disable Cached Alternate Mode
3. Uninstall and reinstall the most recent model of Outlook
4. Flip OFF Outlook ads-in that will trigger battle

Additionally learn: The File can’t be opened message in Outlook – Outlook Knowledge File

How do you repair the Outlook information recordsdata that can’t be accessed?

If you wish to repair Outlook information recordsdata that may not be accessed then attempt these fixes.

1. Restart the Outlook
2. Test Account Settings
3. Test Web Connection
4. Create New Account Profile
5. Setup E-mail Account

Additionally learn: Despatched gadgets folder lacking or not present in Outlook; How you can get it again?

How do I convert an OST to a PST file in Outlook?

If you wish to convert the Outlook OST file to a PST file, use the under steps to transform manually.

1. First, open Outlook and click on on the File within the high left nook.
2. After that, click on on the Open&Export and choose the Import/Export possibility.
3. Now choose the Export to a file possibility on the Import and Export Wizard Window web page and click on Subsequent.
4. Now choose the Outlook Knowledge File (.pst) and once more click on Subsequent.
5. Now, select whether or not to export a particular folder or the entire account and in addition examine the embody subfolder field > click on Subsequent.
6. Select the vacation spot for the Export by clicking on browse, after which click on End.

Additionally learn: How you can clear up, compact, and scale back mailbox measurement in Microsoft Outlook.