In the Workspace web.config file, the following line controls the maximum upload limit when publishing templates to Workspace:
<httpRuntime maxRequestLength="32768" requestLengthDiskThreshold="4096" />
You can edit the sizes for maxRequestLength and requestLengthDiskThreshold to increase or decrease the upload limit. If the upload limit is exceeded during an upload action, Workspace produces an error message.
By default, the maximum request length is set to 32768kB (32MB). We recommend that the upload limit for Workspace be kept low, to minimize security risks to the server.