Remote Desktop Manager macOS Unknown error (0x0000001C)

When trying to connect to an RDP host in Remote Desktop Manager macOS you get the error message: Unknown error (0x0000001C).

Solution

The workaround is to increase the default TCP acknowledgement timeout to 30 seconds (30000).

  • This setting can be changed globally for all RDP entries in File - Preferences - Types - RDP - Connection.

KB5018

  • Or changed locally, in the entries properties Common section, by going in RDP (Microsoft Remote Desktop) - Advanced - Connection.

KB5019

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