This knowledge base will help you to resolve the error below:
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ERROR;2017-08-29T07:29:23,236-06:00;2017-08-29 13:29:23,236;8569b9ea-810e-4093-8cc4-ff444f132bea;(null);WorkerStartup 1;;Spotfire.Dxp.Worker.Host.WorkerHost;"Failed to start worker.
Spotfire.Dxp.Internal.Utilities.ApplicationSetupException: Failed to connect to the Spotfire Server ---> Spotfire.Dxp.Services.ManifestReader+ManifestWebException: Could not connect to server 'http://xyz.tsspune.lab:9443/' to download manifest, the operation timed out after 60000 ms.
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When starting Web Player service, it may not start and reports the error below: ------------------------------------------------------------------------------------------------------------ ERROR;2017-08-29T07:29:23,236-06:00;2017-08-29 13:29:23,236;8569b9ea-810e-4093-8cc4-ff444f132bea;(null);WorkerStartup 1;;Spotfire.Dxp.Worker.Host.WorkerHost;"Failed to start worker. Spotfire.Dxp.Internal.Utilities.ApplicationSetupException: Failed to connect to the Spotfire Server ---> Spotfire.Dxp.Services.ManifestReader+ManifestWebException: Could not connect to server 'http://xyz.tsspune.lab:9443/' to download manifest, the operation timed out after 60000 ms. ----------------------------------------------------------------------------

All supported operating systems

Login to the Spotfire Server and export the Web Player configuration.

Follow below steps to export and import Web Player configuration.
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- Run the export config command at the command prompt.
  <installation folder>\7.X.0\tomcat\bin>config export-service-config  --deployment-area="Production" --force --capability=WEB_PLAYER

- Provide the config Tool Password when prompted.
- Browse to the location "<installation folder>\7.X.0\tomcat\bin\config\root\" and edit "Spotfire.Dxp.Worker.Host.exe.config" and edit/increase the below value.

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      <setting name="ManifestDownloadTimeoutMilliseconds" serializeAs="String">
        <value>60000</value>
      </setting>
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> The value is 60000 milliseconds by default. You may increase the value by 5000 or more (depending on the requirement)
Example:  <value>65000</value>

- Save the config file and import it as follows.
   <installation folder>\7.X.X\tomcat\bin>config import-service-config  --config-name="provide a custom name"

- Provide the config Tool Password when prompted.
- Login to the Spotfire Admin console > Open "Nodes and Services".
- Click on Web Player Service and update it.

Refer to the link below for more information on export/import commands.
https://docs.tibco.com/pub/spotfire_server/7.10.0/doc/html/TIB_sfire_server_tsas_admin_help/GUID-5462A06E-20CC-4F42-BCB8-0A66C8EC1C18.html

NOTE: The same settings are applicable for Automation Services as well.

https://docs.tibco.com/pub/spotfire_server/7.10.0/doc/html/TIB_sfire_server_tsas_admin_help/GUID-5462A06E-20CC-4F42-BCB8-0A66C8EC1C18.html