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Microsoft Outlook and Exchange Server are used by most business organizations across the world. As both are very popular, users need to be aware of OST files used by Microsoft Outlook to store a replica of Exchange Server mailbox contents on the local machine. With the help of the OST file, it becomes easy for users to work in Outlook while offline.
Yet sometimes, error messages are returned when a user tries to access their OST file. For example, “username . ost file is in use and cannot be accessed.” This error message states that the OS file that a user is trying to access is in use by another application. The reason behind such an error and how it can be resolved is explained here.
Why “OST is in use and cannot be accessed” Error Encountered?
If a user tries to go for the “Save and Send” service incorporated in Office applications, an Outlook error “the file xxxx . ost is in use and cannot be accessed” is sometimes experienced. This error message generally states that the OST file of Outlook is in use by another program. Apart from this, there can be other reasons for this error:
Troubleshooting the “OST is in use and cannot be accessed” Issue
To identify the reasons behind this error, it’s time to use the various troubleshooting tricks discussed below:
Trick #1: Close Outlook & All Related Processes
First of all, a user needs to make sure that all Outlook related processes are not in a running state because they can also leave Outlook . ost in an “in use” state. To do this, follow the steps mentioned below:
Trick #2: Disable Exchange Cached Mode
To turn off Exchange cached mode, follow the steps mentioned below:
Trick #3: Run Inbox Repair Tool to Repair Corrupt OST File
Microsoft provides a free inbuilt utility named as scanpst.exe or Inbox Repair Tool to repair issues encountered in Outlook. It is a pre-installed tool in Outlook that is used to repair damaged OST and PST files, including all data items in it. To use this tool, follow the steps mentioned below:
Trick #4: Via Professional Tool
If any of the above tricks are unable to fix this “OST is in use and cannot be accessed”, then it is clear that one needs to look for some professional solution.
SysTools OST to PST Converter is one such type of application that a user can try to overcome all OST file related issues. It is designed to remove all types of corruptions from OST files in just a few simple clicks. Using this application, one can repair all data items stored in emails, contacts, tasks, etc. Moreover, the software is compatible to repair OST files with both minor and major level corruption. A user can use this application in any version of Microsoft Windows OS.
Microsoft Outlook is an amazing application with all required features to enhance a business. But no application is free from problems, same is the case with the Outlook OST file. One such commonly encountered error by the user is “OST is in use and cannot be accessed”. Thus, to access the Outlook . ost file in a normal way, it is necessary to fix this error. Hence, the above post discusses various troubleshooting tricks to achieve this end goal.
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