Blue prism HUB Installation Prod|1603 MSI error

[dipu]

Hi All,

We have successfully installed hub on STG . But we are getting error in Prod While installing Hub  MSI files in Blue Prism  on prem ,we are getting permission error as mentioned below(Info: SFXCA: Failed to create temp directory. Error code 5) .Could you please advise how to resolve this issue .

I ran Powershell script with elevated rights and also I tried manual installation with MSI files but still getting same error.

Info: === Logging started: 3/30/2026  8:00:40 ===
CommonData: Message type: 0, Argument: 1033, 1252
CommonData: Message type: 1, Argument: Alm
ActionStart: Action 8:00:40: INSTALL. 
Info: Action start 8:00:40: INSTALL.
CommonData: 1: 0 2: 1033 3: 1252 
CommonData: 1: 0 2: 1033 3: 1252 
CommonData: 1: Alm
Info: === Logging started: 3/30/2026  8:00:46 ===
CommonData: Message type: 0, Argument: 1033, 1252
CommonData: Message type: 1, Argument: Alm
ActionStart: Action 8:00:46: INSTALL. 
Info: Action start 8:00:46: INSTALL.
InstallStart: 1: Alm 2: {35CD36E1-9BC5-4AAB-A278-320B2F8AA286} 
ActionStart: Action 8:00:46: FindRelatedProducts. Searching for related applications
Info: Action start 8:00:46: FindRelatedProducts.
Info: Action ended 8:00:46: FindRelatedProducts. Return value 1.
ActionStart: Action 8:00:46: WixSharp_InitRuntime_Action. 
Info: Action start 8:00:46: WixSharp_InitRuntime_Action.
Info: SFXCA: Failed to create temp directory. Error code 5
Info: CustomAction WixSharp_InitRuntime_Action returned actual error code 1603 (note this may not be 100% accurate if translation happened inside sandbox)
Info: Action ended 8:00:48: WixSharp_InitRuntime_Action. Return value 3.
Info: Action ended 8:00:48: INSTALL. Return value 3.
InstallEnd: 1: Alm 2: {35CD36E1-9BC5-4AAB-A278-320B2F8AA286} 3: 3 
CommonData: 1: 2 2: 0 
CommonData: 1: 2 2: 1 
Info: Action ended 8:00:48: INSTALL. Return value 3.

Thank you in Advance!

[steven.boggs · Accepted solution]

We've seen in the past that '1603' errors can occur when installing Hub if the appropriate Domain is not specified within the config.json file. Please have a look at this Knowledge Base article, "Hub error "Installation success or error status: 1603" when attempting to install" for details. Review the config file and ensure the correct Domain name is specified to allow for it to be used as the suffix for all services.

[taylor_brooks]

If the config.json domain is already correct, I'd check the temp path next. SFXCA failed to create temp directory with error code 5 is usually Windows denying write access to the temp location the MSI custom action is using.

I'd verify the TEMP and TMP vars for the install context, write access to C:\Windows\Temp and the service account temp folder, and whether AV or AppLocker is blocking MSI custom actions. I've seen 1603 stick around even with elevated PowerShell when the installer account can't create its temp working folder.