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Chromium XSLT Deprecation Affecting Classic UI [Action Required]

  • May 1, 2026
  • 5 replies
  • 859 views

Omar Ghazi
Community Manager
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Starting November 17, 2026, Google will remove support for XSLT to prevent potential security risks on Chromium-based browsers (including Google Chrome and Microsoft Edge). This change will prevent Classic UI screens in Acumatica ERP from loading in these browsers.

 

If your instance still relies on Classic UI, action is required before November 17, 2026.

 

What is the impact?


The severity of disruption depends on how much your instance relies on Classic UI. Any screen still running on Classic UI will stop loading in Chrome or Edge. If your team uses a mix of Modern and Classic UI, some workflows will be affected while others continue normally.

NOTE: Acumatica is delivering a fix that will allow Classic UI to continue loading on Chromium-based browsers after November 17, 2026. This fix is available for Acumatica 2025 R1 and later versions only.
 

Recommended Actions


If you are on Acumatica 2024 R2 or earlier:

  • Upgrade to 2025 R1 or later to receive this fix.
  • Use Mozilla Firefox as a temporary workaround until you can upgrade.

If you are on Acumatica 2025 R1 or later:

  • A fix will be delivered soon.
  • Plan your migration to Modern UI. Classic UI is being deprecated in 2026 R2.

 

Staying Updated


Monitor the Knowledge Base Article for the latest updates on this fix and its availability timeline.

5 replies

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Hi ​@Omar Ghazi, thank you for the detailed information. I was wondering if you might be able to share any estimated timeline for when the fix for 2025 R1 will be available. Thanks!


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  • Jr Varsity II
  • June 4, 2026

Hi ​@Omar Ghazi, thank you for the detailed information. I was wondering if you might be able to share any estimated timeline for when the fix for 2025 R1 will be available. Thanks!

Curious as well on our end.  We are on 2025R2 25.200.0248.3 +.


VishalSrinivasan80
Community Manager

Hi ​@Omar Ghazi, thank you for the detailed information. I was wondering if you might be able to share any estimated timeline for when the fix for 2025 R1 will be available. Thanks!

Curious as well on our end.  We are on 2025R2 25.200.0248.3 +.

Hi Lanaswillow,

The next patch update (with the fix) for 25R1 is targeted for July 3, 2026. 


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  • Jr Varsity II
  • June 4, 2026

Hi ​@Omar Ghazi, thank you for the detailed information. I was wondering if you might be able to share any estimated timeline for when the fix for 2025 R1 will be available. Thanks!

Curious as well on our end.  We are on 2025R2 25.200.0248.3 +.

Hi Lanaswillow,

The next patch update (with the fix) for 25R1 is targeted for July 3, 2026. 

Wonderful news Vishal, thank you for the details and for the reply.  Just to confirm if this patch is applied this will allow us to stay using Chrome as the web browser after XSLT is deprecated until we migrate to modern?

Appreciate your time!


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  • Jr Varsity II
  • June 4, 2026

Hi ​@Omar Ghazi, thank you for the detailed information. I was wondering if you might be able to share any estimated timeline for when the fix for 2025 R1 will be available. Thanks!

Curious as well on our end.  We are on 2025R2 25.200.0248.3 +.

Hi Lanaswillow,

The next patch update (with the fix) for 25R1 is targeted for July 3, 2026. 

On more question, when is the anticipated date for 2025R2?