Outlook OST Synchronization Error 8004011D-526-80040115

admin | November 9th, 2017 | Microsoft Outlook

Exchange server is one of the widely organized mail servers of the present arena. Whereas, OST file is the offline folder of Outlook, which provides the users to work offline in MS Exchange environment. These files are quite useful to make continuity in the work even at a time of interrupted connectivity and non-Exchange environment. However, many times user receives an error code while synchronizing the data “Outlook synchronization error 8004011D-526-80040115-0” In such case, OST file will leftovers in unusable as well as unworkable condition. In the following section, we will discuss the causes and a way to solve Outlook OST synchronization error and corruption issues in Outlook.

Reasons Behind Synchronization Error 8004011D-526-80040115

When the users utilize Outlook cache permitted mode with MS Exchange server then, they get the facility of working in the offline mode. However, when they synchronize the offline data with the Exchange server mailbox then, they encounter synchronization Errors like 8004011D-526-80040115. This is occurred due to the mentioned reasons:

  • System is down for maintenance
  • Network connectivity issues
  • Corrupted OST file
  • Some issues in the current profile
  • Halts of synchronization process due to power failure

Methodology to Rectify the Outlook OST Synchronization Error

If OST file meets Error 8004011D-526-80040115 while synchronizing with Microsoft Exchange server then, follow steps to resolve it:

  • You can wait until MS Exchange server again comes online and stab to resynchronize your Outlook OST file.
  • Try to find out network problems in your connection and after receiving them fixed again synchronize.
  • Recreating profile, which is facing synchronization issue, is also the convenient option.
  • Try restoring data if you have new as well as updated data backup, which is stored in Exchange OST file.
  • Check profile settings and make assured that default delivery destination is accurate.
  • Launch OST Integrity Tool to resolve Outlook OST synchronization error.
  • Uninstall anti-virus software installed on your machine for some time.

NOTE: You can also remove the OST file, which is facing synchronization error and then, let Outlook download all data, which was present on a server that is running MS Exchange Server. In case, OST file has local data, which is not saved on a server then you can export all data to PST file then, delete OST file. After the data is downloaded from a server then, you can make new OST file and then, import all data from PST file.

If all the above ways fail to nullify an error arising in the synchronization process, then it is clear that the OST file has undergone corruption. The method, which can be used for this purpose, then, simply use the third-party tool as mentioned in the next session.

Excellent Alternative to Fix Outlook OST Synchronization error

All the above-suggested methods are very time to consume and complicated for a user who is not well learned. Commercial application in the online market is present in abundance and can easily be availed in a few clicks. The best part of using a third party tool over any other workaround is that your source file is not interfered with and you get a free testing of the product too. Therefore, there are no blind investments made which results in the desired outcome received. OST Recovery is a similar product that is devised to help you learn how to deal with corrupt Outlook OST files without having to make any compromises.


In the above discussion, the reasons behind the occurrence of Outlook OST synchronization error 8004011D-526-80040115 are discussed. Along with this, the solution to resolve OST file Synchronization & Corruption Issues in Outlook is also described that helps users to perform the synchronization properly. According to experts, users should opt the usage of third party utility as it saves time and effort of users. It also avoids the data loss.