startCCH iFirm Minimum specifications
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CCH iFirm Minimum specifications

CCH IFirm
Last update: Reading time 2 minutes
ConfigurationSystem Requirements

    Supported browser versions:

    • Google Chrome
    • Microsoft Edge
    • Firefox
    • Safari (Mac)

    Internet Explorer is no longer supported.
    Microsoft has offered Edge as the default browser for several years and actively encourages the use of Edge instead of Internet Explorer (IE). We therefore recommend using Edge or one of the other supported browsers.

    Prerequisites 

    • Microsoft .NET 8 ASP.NET Core Runtime (version 10 required for CCH Central 2026.2)
    • Microsoft .NET 8 .NET Runtime(version 10 required for CCH Central 2026.2)
    • Microsoft Edge WebView2 Runtime
    • The version of CCH Central must be on 2026.100 or later to use CCH iFirm
    • CCH Central Services must be in a running state

    The CSI will install the latest version for you.  You will also need to go to the Tools section and select .Net 8.0 Installation, then Install. (version 10 required for CCH Central 2026.2)

    CCH_iFirm_Minimum_Specification_1.png
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    Other info

    CCH iFirm Modules

    If you are using the CCH iFirm modules within the CCH Central suite then you will require Microsoft .NET 8.0 (version 10 required for CCH Central 2026.2) runtime to be installed on all computers where CCH iFirm functionality within the CCH Central suite is to be utilized.

    Important Note to current or future CCH iFirm customers: 

    CCH Central 2025.310 release provides crucial updates relating to cloud contact security.

    The service pack will enable a synchronization of contact access rights between CCH Central & CCH iFirm.

    CCH iFirm contact security will be dependent on this release. As a result, any firms using CCH iFirm without having installed the service pack will have no contact security controls, meaning that all CCH iFirm users can access all contacts/clients (in CCH iFirm only).

    This update relates to anyone already using or planning to use any of the following in the near future:

    • CCH iFirm Personal Tax
    • CCH iFirm MTD for Income Tax
    • CCH iFirm AML
    • CCH iFirm Accounts Production
    • CCH iFirm Validate

    Checklist

    • Coverage of the prerequisites completed to all touchpoints (CCH Dual Platform Packs)
    • Check and Confirm the presence of a CCH Central Service for all Databases where CCH iFirm is required
    • Update, where required, each Database to use a unique Client Code ahead of CCH iFirm activation and retain uniqueness moving forwards
    • Update of CCH Central on the given environment to the current release version in alignment with the release schedule

    URL's required for CCH iFirm

    ServicePort / DescriptionURL
    CCH iFirm UK Services443 TCPapi.uk.cchifirm.com
    CCH iFirm UK Services443 TCPcdn.uk.cchifirm.com
    CCH iFirm UK Services443 TCPuk.cchifirm.com
    CCH iFirm UK Services443 TCPuserdocs.wolterskluwer.co.uk
    CCH iFirm Central Services443 TCPapi.taa.wolterskluwer.eu
    Wolters Kluwer Self‑Service443 TCPprodsrstrgglobweaaa01.blob.core.windows.net
    Wolters Kluwer Self‑Service443 TCPlogin.wolterskluwer.eu
    Wolters Kluwer Self‑Service443 TCPprod-eusws-webapi.wolterskluwercloud.com
    CCH iFirm Global Services443 TCPprd.cchifirm.uk
    Wolters Kluwer CDN443 TCPcdn.wolterskluwer.io
    Wolters Kluwer443 TCPwolterskluwer.com
    Microsoft Application Insights443 TCPdc.services.visualstudio.com
    Microsoft Application Insights443 TCPjs.monitor.azure.com
    OneTrust443 TCPcdn.cookielaw.org
    OneTrust443 TCPgeolocation.onetrust.com
    OneTrust443 TCPonetrust.com
    OneTrust443 TCPprivacyportal-de.onetrust.com
    Pendo443 TCPcdn.pendo.io
    Pendo443 TCPdata.eu.pendo.io
    Pendo443 TCPpendo-eu-static-4983065113853952.storage.googleapis.com
    Google Tag Manager (GTM)443 TCPgoogletagmanager.com

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