Bonum Certa Men Certa

Microsoft's Excel Fails at Maths Again, New Warnings About OOXML Defects

GNOME CalcA couple of nice items, one of which is a blog post and another one an article, have just been published. Together they illustrate both the 'bugginess' of OOXML and the office suite around which it's actually modeled.

Let's start with Rob Weir's latest post, It sheds light on the huge amount of defects already found in OOXML. They remain largely unresolved while Microsoft rushes the process, breaking and bending the rules, as usual.

DIS 29500, Office Open XML, was submitted for Fast Track review by Ecma as 6,045 page specification. (After the BRM, it is now longer, maybe 7,500 pages or so. We don't know for sure, since the post-BRM text is not yet available for inspection.) Based on the original 6,045 page length, a 5-month review by JTC1 NB's lead to 48 defect reports by NB's, reporting a total of 3,522 defects. Ecma responded to these defect reports with 1,027 proposals, which the recent BRM, mainly through the actions of one big overnight ballot, approved.


In case you believe that Microsoft's OOXML is enough provided that you use Microsoft Office, question your beliefs again. For the third time in just months, a bug is find in the calculations done by Microsoft Excel. Watch in disbelief the outcome of poor quality control.

A bug in this week's MS08-014 patch causes Excel to return zeroes instead of the correct number when certain types of macros are run within the program.


Depending on the domain in which Excel gets used, this could be critical. In some cases, such bugs can lead to death.

It was only days ago that we last identified a similar bug. Below we append several more, some of which may have expired for copyrights reasons for which only/mainly Associated Press is renowned.

Other incidents and reports of interest:

[1] Trouble In Microsoft World Over Calculator

The calculator post seems to be a reaction to a MS KnowledgeBase article titled Incorrect Calculator Results When You Use the Percent Key which implies the percent function screws up your results when you use it along with + or – in any combination. Way to go Microsoft!


[2] Microsoft Excel fails math test

Microsoft Corp.'s Excel 2007 spreadsheet program is going to have to relearn part of its multiplication table.


[3] Microsoft: Excel Bug Doesn't Add Up

If you've been depending on your Microsoft Excel software to do your number crunching for you, you might want to grab a calculator and review your spreadsheets before you send the document out the door. That's because the latest version of Excel is housing bugs that are dead set on ruining your reports.


[4] Mathematically Incorrect

So when it comes to comparing MSOOXML and ODF v1.0 on the basis of the inclusion of "Formula Definitions", it becomes clear that the anti-ODF folk have not much to shout about. In fact MSOOXML's "Formula Definition" is deficient and inaccurate.


[5] The Formula for Failure

As I've shown, in the rush to write a 6,000 page standard in less than a year, Ecma dropped the ball. OOXML's spreadsheet formula is worse than missing. It has incorrect formulas that, if implemented according to the standard may cause loss of life, property and capital. This standard is seriously messed up. And shame on all those who praised and continue to praise the OOXML formula specification without actually reading it.


If you are aware of more such incidents and error, please shout out and share the knowledge.

Comments

Recent Techrights' Posts

Richard Stallman's Talk at Georgia Tech is Just 2 Days Away
We're still curious to see how malicious people (or trolls) in social control media will try to slant his talk as "bad"
The "Alicante Mafia" - Part VII - The Industrial Actions Began Yesterday, Here's Why
The "Alicante Mafia" might not last much longer
openai.com Traffic Said to Have Fallen 50% in the Past Three Months, Reports Say It Nearly Ran Out of Money to Borrow
After the slop frenzy all we'll have left is environmental destruction
 
Links 21/01/2026: "Snap Settles Lawsuit on Social Media Addiction" and Attempts in the US to Revive Software Patents
Links for the day
Links 21/01/2026: Microsoft 'Open' 'Hey Hi' in More Trouble, US Has "Brown Shirts" Problem
Links for the day
Yesterday Afternoon The Register MS Published Paid Microsoft SPAM Disguised as an Article About "AI PCs"
The Register MS cannot help itself, can it? [...] Follow the money.
Microsoft's XBox is in Effect Dead Already, Now It's a Streaming and Advertising Platform
Expect many layoffs soon
EPO's Web Site Misused for Propaganda About Illegal Kangaroo Courts to Distract From EPO Scandals and Judicial Crisis in Europe
UPC is illegal and unconstitutional
Gemini Links 21/01/2026: Edible Circuits and "Sayonara HTTP"
Links for the day
Over at Tux Machines...
GNU/Linux news for the past day
IRC Proceedings: Tuesday, January 20, 2026
IRC logs for Tuesday, January 20, 2026
IBM Hides Its Own Destruction (and Red Hat's)
It's like scenes out of '1984', which is what a now-famous advertisement from Apple compared IBM to
LLM Slop Not Dead Yet, Examples of Slop About "Linux"
We wish to see the totals down to zero
Links 20/01/2026: Cheeto Blackmails France Into 'Peace' While Looking to Annex EU, Mass Layoffs in Capgemini (Microsoft Reseller/Promoter) in France
Links for the day
Gemini Links 20/01/2026: Boxing and "Inbox Zero" Success
Links for the day
Windows and Slop Declining While Microsoft Silences Critics
Microsoft tries to suppress facts while faking 'demand' by imposing slop on everybody, everywhere
IBM Kills OzLabs, Signalling An Attack on Free Software (a Sign for Red Hat)
ibiblio also appears to have died (or experiences critical issues)
Red Hat Vice President Leaving After Nearly Two Decades
IBM's culture of secrecy is not compatible with Free software
Links 20/01/2026: "ChatGPT Health" (Latest Distraction From Being Insolvent) Flops and Raises Concerns, "The U.S. Military Faces a Reckoning on Greenland"
Links for the day
Rudeness and Vulgarity Won't Stop Journalism About Free Software
we seem to be on the right path
Readers Pleased With Layout Changes
Two days ago we began improving clarity and accessibility in the site
IBM Plans for Layoffs Becoming Clearer With "Employee Reviews"
Of course this impacts Red Hat as well
IBM is Outsourcing Red Hat's Fedora to Slop to 'Save Money'
If IBM cared about quality rather than alleged "cost savings" (cutting corners), it would assign more IBM staff to Fedora, but instead the exact opposite happened, with the likes of Cotton and Miller removed from the project
European Patent Office (EPO) Industrial Actions Formally Start in Two Hours
As per the latest (revised) action plan, today workers will slow down their work and limit patent grants
Microsoft Under Fresh Investigation by the Italian Competition Authority
In 2025 we kept a running tally of 30,000+ Microsoft layoffs, so 40k this year would not be unthinkable
The "Alicante Mafia" - Part VI - More Strikes Planned at the EPO, Starting This Month
Yesterday we said that friends of Berenguer or inside Berenguer's circle may have left
Gemini Links 20/01/2026: New Tea, Using a Roku at a Hotel, and "Voltage-Based Power Management for Any Raspberry Pi"
Links for the day
Over at Tux Machines...
GNU/Linux news for the past day
IRC Proceedings: Monday, January 19, 2026
IRC logs for Monday, January 19, 2026
If You Don't Want "Linux" to Become "Windows", Then Follow GNU
GAFAM isn't a friend of Linux; it's only a user in the same sense clients are "users" of a brothel
Links 19/01/2026: National Broadcasters on World or Local Affairs Up to a Week Ago
Links for the day
Gemini Links 19/01/2026: Game Boy and "The Lounge" (IRC) for the Elderly
Links for the day
Slopfarms in Google News (at Least Three Today) With Fake 'Articles' About "Linux"
Google itself is trying to promote its own slop ("Overview") at the expense of original and credible sources
Links 19/01/2026: ChatGPT’s Defects and The Guardian on Why So-called "AI Companies Will Fail"
Links for the day
This is What the Slop Bubble Popping Can Look Like
Maybe not an overnight collapse, but getting there gradually
IBM Quiet About Its Plan for Red Hat Amid Accelerated Bluewashing
Something is going on at Red Hat
The "Alicante Mafia" - Part V - It Seems Like Some People Are Already Leaving "The Mafia"
they have a rough idea of what's coming
Microsoft Means War, Microsoft is on the Side of ICE
Microsoft, people-ready
More Confirmatory Rumours Regarding "Massive" Red Hat Layoffs
Ecosystem and sales said to be targeted
Proprietary UNIX is What We'll Have If IBM Red Hat Gets Its Way
IBM Red Hat wants to control everything, even if that means killing everybody
Free Software in Times of Peace (and Times of War, Too)
GAFAM and IBM are war companies
Founder of GNU/Linux (RMS) Speaks in US University (College) This Week
The auditorium has very high capacity and this is his "college comeback" talk in the United States
Office Meetings Are Most Useful to the Least Productive Workers
In my "office life" days I really didn't like meetings
LinuxSecurity and Linuxiac Are Still Slopfarms, Even Anthony Pell Does It
We suppose waiting another month or another year won't change a thing
Claim That the Board of Directors at IBM Isn't Happy With How the Company is Run
IBM tries to project an image of strength to the whole world, especially to its clients
Links 18/01/2026: Legal Trouble for xAI, Climate Concerns, Data Breaches and More
Links for the day
'Vibe Coding', Chatbots, and Other Bots (e.g. "Agents" Disguised as "Superintelligence") Aren't Saving You Time
False marketing, FOMO marketing tactics
Gemini Links 19/01/2026: Analog Cameras and Plucker in 2026, US Losing Acceptability in Europe
Links for the day
Over at Tux Machines...
GNU/Linux news for the past day
IRC Proceedings: Sunday, January 18, 2026
IRC logs for Sunday, January 18, 2026