How to resolve error “could not finish the operation within specified timeout” in AzCopy during pst file upload

Case

When trying to upload multiple large files to Microsoft 365 temporary storage space in Azure via AzCopy, you receive the following error : “Could Not Finish the Operation Within Specified Timeout”.

Solution

As per Microsoft documentation of the AzCopy tool, “AzCopy by default starts a certain number of concurrent operations to increase the data transfer throughput. Note that large number of concurrent operations in a low-bandwidth environment may overwhelm the network connection and prevent the operations from fully completing. Throttle concurrent operations based on actual available network bandwidth. The upper limit for concurrent operations is 512”.

It is a good idea to throttle connections to maximum of two (2) by appending the following switch to the AzCopy upload command:

/NC:2

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