# 233 Developers Discussed Abandoning the Office Add-in Platform — An Open Letter on the Office.js Stability, Security & Trust Crisis
# 233 Developers Discussed Abandoning the Office Add-in Platform — An Open Letter on the Office.js Stability, Security & Trust Crisis ## An Open Letter from the Office Add-in Developer Community **To:** Microsoft Office Extensibility Team, Microsoft 365 Platform Team, Microsoft Developer Relations **From:** The Office Add-in Developer Community **Date:** February 2026 **Subject:** Critical Platform Stability, Security & Trust Issues Requiring Immediate Action --- ## Executive Summary We are writing to formally raise our deep concerns about the **stability, reliability, security, and long-term viability** of the Office.js add-in platform. This letter is informed by a comprehensive analysis of **every issue filed in the OfficeDev/office-js GitHub repository** — over **6,200 issues** spanning 7+ years. The full evidence base is published in the accompanying[01-DETAILED-FINDINGS.md](https://github.com/user-attachments/files/25265671/01-DETAILED-FINDINGS.md) (842 lines, every issue cited) ### The Numbers | Metric | Value | |--------|-------| | Total issues filed | ~6,219 | | Currently open | ~1,092 | | Issues describing "no longer works" | 736 | | Officially labeled regressions | 57 (25 still open) | | Issues "fixed" then broken again | 478 | | Oldest unresolved bug | 7+ years (#316) | | Issues blocking releases/deployments | ~1,242 | | Issues with customer impact reported | ~945 | | Developers discussing platform abandonment | ~233 | | Estimated developer hours wast
Posted by kbrilla on Feb 12, 2026, 2:52 PM
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Raise real-world problems, find people facing the same issue, and discuss solutions.2,000 issues0 comments
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[BUG] Cowork (Windows): all Plan9 shares fail with "Plan9 mount failed: invalid argument" after Windows update KB5124008 (26200.9445) — uninstalling the KB fixe
Feature Request: Auto-resume CLI session when usage limit resets
Please deobfuscate the Python
[Bug] MLX version of Gemma 4 26B fails to load: "Model type gemma4 not supported" (macOS)
# 233 Developers Discussed Abandoning the Office Add-in Platform — An Open Letter on the Office.js Stability, Security & Trust Crisis
[FEATURE] Allow users to configure which shell the Bash tool uses or inherit initial shell
Admin Materials and Surfaces
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# 233 Developers Discussed Abandoning the Office Add-in Platform — An Open Letter on the Office.js Stability, Security & Trust Crisis
# 233 Developers Discussed Abandoning the Office Add-in Platform — An Open Letter on the Office.js Stability, Security & Trust Crisis ## An Open Letter from the Office Add-in Developer Community **To:** Microsoft Office Extensibility Team, Microsoft 365 Platform Team, Microsoft Developer Relations **From:** The Office Add-in Developer Community **Date:** February 2026 **Subject:** Critical Platform Stability, Security & Trust Issues Requiring Immediate Action --- ## Executive Summary We are writing to formally raise our deep concerns about the **stability, reliability, security, and long-term viability** of the Office.js add-in platform. This letter is informed by a comprehensive analysis of **every issue filed in the OfficeDev/office-js GitHub repository** — over **6,200 issues** spanning 7+ years. The full evidence base is published in the accompanying[01-DETAILED-FINDINGS.md](https://github.com/user-attachments/files/25265671/01-DETAILED-FINDINGS.md) (842 lines, every issue cited) ### The Numbers | Metric | Value | |--------|-------| | Total issues filed | ~6,219 | | Currently open | ~1,092 | | Issues describing "no longer works" | 736 | | Officially labeled regressions | 57 (25 still open) | | Issues "fixed" then broken again | 478 | | Oldest unresolved bug | 7+ years (#316) | | Issues blocking releases/deployments | ~1,242 | | Issues with customer impact reported | ~945 | | Developers discussing platform abandonment | ~233 | | Estimated developer hours wast
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