Update Teams mobile app by October or lose your calendar ⁠49%

7/31/2026, 7:30:00 AM

BS Summary: This article contains 26 faulty reasoning types, including Negativity Bias, Pessimism Bias, and Loss Aversion, with Biased Writer Voice as the most egregious example at 31.8% saturation with 95 hits. Analysis detected 717 faulty-reasoning hits from 299 analyzed words, generating a BS Score of 41.9% and a BS Rank of ⁠49% (15,695 of 30,584 articles). This article is better (less manipulative) than 51.30% of the article peer group.

Teams mobile users now have even less time to update the app before older versions lose calendar access. 
Microsoft originally set a late-October deadline in its message, but we're guessing someone familiar with the impending demise of Exchange Web Services (EWS) had a quiet word. 
The date has been brought forward to the beginning of October, leaving users until the end of September to update the Teams mobile app. 
The October deadline applies only to the iOS and Android apps. 
The web and desktop versions are unaffected. 
Users with automatic updates enabled will probably receive a compatible version without doing anything. 
Managed devices are another matter, and administrators will need to ensure an updated Teams app is deployed, though we can't imagine why they might hesitate to roll out one of Microsoft's updates. 
Microsoft has stern words for refuseniks: "Older versions will lose calendar access." 
"This change helps maintain a reliable calendar experience on iOS and Android devices and ensures compatibility with ongoing Teams service updates." 
Microsoft will begin disabling EWS in Exchange Online on October 1, 2026. 
The service stopped receiving feature updates in 2018, its retirement was announced in 2023, and Microsoft detailed the shutdown process earlier this year. 
EWS allows applications to access mailboxes and other data in Exchange. 
It dates to 2007 and has proved popular with both integrators and miscreants, including those behind the Midnight Blizzard intrusion. 
Microsoft is understandably keen to shut it down. 
EWS in on-premises Exchange Server is unaffected, but the Exchange Online version is heading for retirement. 
Administrators can re-enable it temporarily through a policy setting, but the plug will be pulled for good next year. 
At the time, Microsoft stated: "There will be no exceptions past April 2027." 
® 
Article reasoning-pattern comparisonThis article: 4.3%The Register: 2.8%Confirmation Bias4.3%This article: 12.0%The Register: 1.0%Anchoring Bias12.0%This article: 6.0%The Register: 2.9%Availability Heuristic6.0%This article: 6.7%The Register: 1.0%Representativeness Heuristic6.7%This article: 9.0%The Register: 1.0%Hindsight Bias9.0%This article: 9.0%The Register: 2.0%Overconfidence Bias9.0%This article: 2.3%The Register: 4.1%Framing Effect2.3%This article: 15.4%The Register: 0.7%Loss Aversion15.4%This article: 5.4%The Register: 0.8%Status Quo Bias5.4%This article: 6.4%The Register: 0.1%Sunk Cost Effect6.4%This article: 4.7%The Register: 2.9%Optimism Bias4.7%This article: 16.7%The Register: 2.4%Pessimism Bias16.7%This article: 27.4%The Register: 7.3%Negativity Bias27.4%This article: 0.0%The Register: 1.5%Self-Serving Bias0.0%This article: 10.7%The Register: 0.6%Fundamental Attribution Error10.7%This article: 0.0%The Register: 0.1%Actor-Observer Bias0.0%This article: 0.0%The Register: 0.3%In-Group Bias0.0%This article: 0.0%The Register: 0.3%Out-Group Homogeneity Bias0.0%This article: 2.7%The Register: 1.1%Halo Effect2.7%This article: 0.0%The Register: 0.1%Horn Effect0.0%This article: 0.0%The Register: 0.0%Dunning-Kruger Effect0.0%This article: 0.0%The Register: 1.6%Recency Bias0.0%This article: 0.0%The Register: 0.2%Primacy Effect0.0%This article: 0.0%The Register: 0.1%Blind-Spot Bias0.0%This article: 0.0%The Register: 0.5%Ad Hominem0.0%This article: 0.0%The Register: 0.2%Straw Man0.0%This article: 11.4%The Register: 3.6%Appeal to Authority11.4%This article: 0.0%The Register: 1.4%False Dilemma0.0%This article: 0.0%The Register: 1.0%Slippery Slope0.0%This article: 0.0%The Register: 0.1%Circular Reasoning0.0%This article: 4.7%The Register: 5.4%Hasty Generalization4.7%This article: 0.0%The Register: 0.3%Red Herring0.0%This article: 0.0%The Register: 0.5%Bandwagon0.0%This article: 0.0%The Register: 2.6%Appeal to Emotion0.0%This article: 7.0%The Register: 0.6%Begging the Question7.0%This article: 0.0%The Register: 1.8%Post Hoc (False Cause)0.0%This article: 0.0%The Register: 0.1%Tu Quoque0.0%This article: 0.0%The Register: 0.6%Burden of Proof0.0%This article: 0.0%The Register: 0.1%Appeal to Nature0.0%This article: 0.0%The Register: 0.3%Composition/Division0.0%This article: 9.0%The Register: 1.7%Anecdotal9.0%This article: 2.7%The Register: 0.0%No True Scotsman2.7%This article: 0.0%The Register: 1.7%Ambiguity (Equivocation)0.0%This article: 0.0%The Register: 0.0%Gambler’s Fallacy0.0%This article: 0.0%The Register: 0.1%Middle Ground0.0%This article: 0.0%The Register: 0.1%Personal Incredulity0.0%This article: 6.4%The Register: 0.2%Special Pleading6.4%This article: 6.7%The Register: 0.2%Genetic Fallacy6.7%This article: 9.0%The Register: 1.8%Unattributed Quote9.0%This article: 4.0%The Register: 1.0%Quote-first Misdirection4.0%This article: 31.8%The Register: 6.4%Biased Writer Voice31.8%This article: 8.4%The Register: 1.3%Indoctrination8.4%This article: 0.0%The Register: 0.1%Politically Left Leaning Bias0.0%This article: 0.0%The Register: 0.1%Politically Right Leaning Bias0.0%This article: 0.0%The Register: 2.1%Attempt to Sell a Product or S…0.0%

299 words analyzed.

Speakers

1speaker15%attributed speech253writer words
Selected voice

Microsoft

100%flagged-word coverage
46 attributed words100% of attributed speech82% writer coverage
0%27.5%55.0%Indoctrination+54.3 ptsWriter: 0.0%Microsoft: 54.3%54.3%Biased Writer Voice-37.5 ptsWriter: 37.5%Microsoft: 0.0%0.0%Quote-first Misdirection+26.1 ptsWriter: 0.0%Microsoft: 26.1%26.1%Unattributed Quote-10.7 ptsWriter: 10.7%Microsoft: 0.0%0.0%

Attribution is sentence-level. Pattern percentages are calculated only from words assigned to that voice.

Loading…
Loading…
Loading…
Loading…

Analysis

Hover over highlighted words in the article to view the associated bias or fallacy analysis.