If you import the Mac OLM files to Outlook for Windows without changing the format.When the Outlook application is being shut down improperly or forcefully.If the server of the Microsoft Exchange crashes.Even if it is a portable data that is stored. If the storage media is corrupted it creeps into the system.If there is any kind of intervention while installing Mac Outlook then there is a chance that it might corrupt the OLM file.Sometimes the virus attacks the network which enters the Mac system and corrupts the existing OLM files.Crashing of the Outlook abruptly in the Mac causes the failure to access the Mac OLM files.Sometimes this could happen due to the following reasons:. These OLM files at times are not accessible due to the violation of certain conditions. It uses the OLM files to store the user Mailbox information and saves it in the storage drive. Outlook for the Mac book has a different configuration.
