QuickBooks Error 6138 105 can occur due to various reasons, and it typically indicates issues with the QuickBooks company file. Some possible reasons for QuickBooks Error 6138 105 include the ones you see below.

Corruption within the company file can lead to this error when trying to open, restore, or back up the file.
Problems with the network connection or improper network setup can interfere with accessing or working with the company file, triggering the error.
Insufficient permissions or file access restrictions on the company file can prevent QuickBooks from performing certain operations, resulting in the error.
Errors during the QuickBooks update process may lead to issues within the company file and manifest as Error 6138 105.

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