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Salonis's avatar
Salonis
Copper Contributor
Apr 11, 2025

Beta 2505 - OFFICE_MODULE_VERSION_MISMATCH

After Microsoft 365 updated to Beta Version 2505 earlier this week (April 8), Reliability Center shows an OFFICE_MODULE_VERSION_MISMATCH error when the program is closed for all installed apps (Word, Excel, and Outlook Classic). Furthermore, when Outlook runs Reliability Center shows an error identifying that the Search Protocol Host crashed. The faulting module is identified as ntdll.dll.

I know the error is linked to this Beta Version, as I restored a system backup from April 7 that had Beta Version 2504 installed. There were no errors. As soon as Microsoft 365 updated to Version 2505, the errors returned.

I'm hanging back on 2504 for now with updates disabled. Hopefully the issue will be resolved with the next Beta release.

Microsoft 365 Insider

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  • BlueMonday19's avatar
    BlueMonday19
    Copper Contributor
    Apr 16, 2025

    Noticed this to, on two PCs here. First saw it today with the April 8th update and also with today's update 

    • Salonis's avatar
      Salonis
      Copper Contributor
      Apr 17, 2025

      Thanks for confirming that you saw it on today's update too. I was about to install the new update to test. But I'll hold off for another week.

      • BlueMonday19's avatar
        BlueMonday19
        Copper Contributor
        Apr 17, 2025

        I uninstalled Office and used the offline DVD image to re-install the non-beta version, it didn't have an error on exit. As soon as I enabled Beta again and got the update, crashing again

         

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