告诉HN：Microsoft365的“转换为付费”结账默默默认选择25个许可证。
大家好，给任何独立创始人或开发者设置电子邮件基础设施的朋友们一个重要提醒。昨晚我差点被微软的结账界面彻底坑了。
我在使用 Microsoft 365 Business Basic 的 30 天免费试用，目的是测试我创业公司的电子邮件路由。我决定提前转为付费订阅，点击了“转换为付费订阅”按钮。价格清楚地标示为每月 3.68 美元。我确认了。
他们发了一封 0.00 美元的确认邮件（通常是预授权的内容），我就放心地去睡觉了。
今天早上醒来，收到银行的交易失败警报，金额为 99.00 美元。
我心里一沉。幸好我用的卡因为汇率原因少了几块钱，所以交易未能成功。如果我用的是我的主信用卡，我就会无缘无故损失一百美元。
我重新登录到管理中心（那简直是个迷宫）想弄清楚发生了什么。结果发现，当你点击“转换为付费”时，微软默认会默默地将数量填充为 25 个许可证。25 个用户 x 3.68 美元 = 92 美元 + 税费 = 99 美元。
没有明确的弹窗提示，也没有“你确定要为一个人公司购买 25 个席位吗？”这样的提示。只是一个隐藏在复杂界面中的默认值，旨在从那些不仔细检查每个下拉菜单的人身上榨取最大化的每用户平均收入。
最糟糕的部分？联系支持。找到实际的支持工单页面就像大海捞针。我甚至问了 Copilot 和 Gemini 找到这个问题的直接微软支持链接，但两个 AI 给我的都是无用的过时链接。我不得不翻阅一些冷门的论坛帖子，才找到隐藏的支持门户来申诉这个问题。
总结一下：1. 在处理大型科技公司的 SaaS 时，始终使用虚拟卡或限额卡。
2. 升级 MS365 时，仔细检查“数量”字段。他们会试图偷偷将 25 个许可证放入你的购物车。
有没有其他人也掉进这个陷阱？如果有人目前被困在微软的支持循环中，需要打开账单工单的直接链接，请告诉我，我会在评论中分享。
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Hey everyone, just a massive heads-up for any solo founders or devs setting up their email infrastructure. I almost got completely robbed by Microsoft's checkout UI last night.<p>I was on the 30-day free trial for Microsoft 365 Business Basic to test my startup's email routing. I decided to pull the trigger early and clicked the "Convert to paid subscription" button. The pricing was clearly listed as $3.68/month. I hit confirm.<p>They sent a $0.00 confirmation email (the usual pre-auth stuff), so I went to sleep thinking everything was fine.<p>Woke up this morning to a failed transaction alert from my bank for $99.00.<p>My heart dropped. Thankfully, I used a card that happened to be a few bucks short of that amount due to currency exchange rates, so the transaction bounced. If I had used my main credit card, I would have been out a hundred bucks for absolutely no reason.<p>I logged back into the admin center (which is an absolute labyrinth to navigate) to figure out what happened. Turns out, when you click "Convert to paid", Microsoft silently auto-fills the quantity to 25 LICENSES by default. 25 users x $3.68 = $92 + taxes = $99.<p>There was no clear pop-up, no "Are you sure you want to buy 25 seats for a 1-person company?" Just a sneaky default value buried in a confusing UI to squeeze out maximum ARPU from people who don't double-check every single dropdown.<p>The worst part? Trying to contact support. Finding the actual support ticket page is like finding a needle in a haystack. I even asked Copilot and Gemini to find the direct Microsoft Support link for this issue, and both AIs gave me useless, outdated links. I had to dig through obscure forum threads just to find the hidden support portal to dispute this.<p>TL;DR: 1. Always use virtual cards or strict-limit cards when dealing with Big Tech SaaS.
2. Double-check the "Quantity" field when upgrading MS365. They will try to sneak 25 licenses into your cart.<p>Has anyone else fallen for this trap? If anyone is currently stuck in the MS support loop and needs the direct link to open a billing ticket, let me know, I'll drop it in the comments.