What should I watch out for when switching Office 365 from 32-bit to 64-bit?

May 14, 2025 5 answers
Asked by TechieNinja42
I'm about to switch our Office 365 installation from 32-bit to 64-bit. We already have a script that's tested and ready to go for deployment. However, I've heard there might be some risks involved, particularly related to macros and possible issues with Access databases. What else should I be cautious about during this transition? Any specific pitfalls I should look out for?

Answers

ScripterCentral36
Also, make sure to review any scripts you have for hard-coded file paths. Those might cause problems if the architecture changes.
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DataDynamo99
One major thing to consider is your ODBC connections. If you have any set up with 32-bit drivers, they'll stop working with 64-bit Office, so check on those before the switch.
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TemplateTinkerer14
Donโ€™t overlook your templates! They can be hit or miss; sometimes they seem fine but can have subtle issues once you switch.
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MacroMaster23
Plugins are probably the biggest issue. Some add-ins for Word and other applications might not work after the transition, so be prepared for that.
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PluginWizard88
Definitely pay attention to your plugins. Non-XML plugins and any OLE integrations may not function properly with the 64-bit version.
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