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

'Cancel Culture' Doesn't Work (in the Long Run)
Despite all the attacks, I'm enjoying life, I'm keeping productive, and our audience continues to grow
GNU/Linux Still up (statCounter Says to 6%) in Bosnia And Herzegovina
Let's see where it is at year's end
Making Layout Changes
Feedback can be sent to us
Behind an Economy of Fake 'Worths' and Fictional 'Valuations' or 'Market Caps'
They normalise white-collar crime and say "everyone is doing it!"
Links 18/01/2026: "South Africa is Running Out of Software Developers", Companies Spooked to Find Slop is a Major Liability
Links for the day
Place Your Bets: Who Will Die First? Microsoft or IBM?
Not even joking; make a guess
Restoring Professional Pride in the Tech Sector
Rejecting slop isn't being a Luddite
Slop Bubble "Is Worse Than The Dot Com Bubble"
Edward Zitron Says It like it is
 
Over at Tux Machines...
GNU/Linux news for the past day
IRC Proceedings: Sunday, January 18, 2026
IRC logs for Sunday, January 18, 2026
Links 18/01/2026: The "Deepfake Porn Site Formerly Known as Twitter" and Turkey to Block Kids' Access to Social Control Media
Links for the day
Gemini Links 18/01/2026: Against English as Language of the Net, "Symposium of Destruction"
Links for the day
You Would Expect This Kind of Misleading Narrative Shortly Before Microsoft (or GAFAM) Mass Layoffs
misleading PR
FOSDEM 2026: democracy panel, GNOME & Sonny Piers modern slavery experiment
Reprinted with permission from Daniel Pocock
Pump-and-Dump With IBM Shares, Courtesy of People Who Stand to Gain From the 'Pump'
"3 Reasons to Buy IBM Stock Right Now"
IBM: Spying on Staff Like Never Before and Implementing Silent Layoffs This Month, Say Insiders
what we heard from whistleblowers seems to corroborate
IBM is Not a Free Software Company (It Never Was)
Red Hat's main product, RHEL, is full of secret sauce and has 'secret recipes' (it is basically proprietary)
IBM Turning Up the 'RTO' (Stress) and 'PIP' (Fear) Heat on Workers, Rebellion May be Brewing
Sometimes it feels like today's executives at IBM view IBM workers as a liability
Links 18/01/2026: Indonesia Against Comedy, Media-Hostile (Censors Comedians) Convicted Felon in White House Defecting to Opponents of NATO
Links for the day
Eventually the Joke (and Financial Fraud) is on Microsoft, Stigmatised for Slop
Is Microsoft trying to commit suicide?
GNU/Linux Leaps to All-time Highs in Virgin Islands
it seems to have started around the "end of 10"
Making and Keeping the Sites Accessible
Sometimes less does mean "more" (or "MOAR")
The "Alicante Mafia" - Part IV - How Europe's Largest Patent Office Recruited Drug Addicts, Antisemites, and People Who Absolutely Cannot Do the Job (But Know the 'Right' People)
To better overlap industrial actions we might delay/postpone/pause this series for a bit
Benefiting by Adding Presence in Geminispace
As the Web gets worse, not limited to bloat as a factor, people seek alternatives
Google News Recently Started Syndicating Another Slopfarm, Linuxiac
Even if Google is aware that there is slop there, it's hard to believe that Google will mind
Software Patents and USMCA (or NAFTA)
We recently pondered going back to issuing 2-3 articles per day about patents and common issues with them
IBM Sued Over PIPs
PIPs are "performance improvement plans"
Sites With "Linux" in Their Name That Are in Effect Slopfarms and Issue Fake Articles
We try to name some of the prolific culprits
Gemini Links 18/01/2026: Raising Notifications From Terminal and Environmental Sanity
Links for the day
IRC Proceedings: Saturday, January 17, 2026
IRC logs for Saturday, January 17, 2026
Over at Tux Machines...
GNU/Linux news for the past day
Links 17/01/2026: Internet Blackout Normalised, Russian Attacks Civilians by Causing Massive Blackouts
Links for the day
Microsoft Lunduke Keeps Distracting From the Real Problems With Rust
Microsoft Lunduke is stigmatising critics
Linuxiac Has Become a Slopfarm, Calling Them Out Isn't Fixing That
What a shame. A once-decent site about "Linux" bites the dust.
Luzern Lion Monument, Albanian Female Whistleblowers: Swiss jurists were cowards
Reprinted with permission from Daniel Pocock
The Splinternet is Already Here, Owing to the Militarisation of Technology (Slop, Social Control Media, Back Doors, and More)
you know what's gonna happen next...
Stack Ranking Against IBM/Red Hat Staff and a Signal of Mass Layoffs (RAs) Justified by Red Hat and IBM as Poor Performance/Misconduct/Other
Working in an atmosphere like this sounds like a nightmare
Gemini Links 17/01/2026: Slow computing and Environment Leak
Links for the day
Links 17/01/2026: US Censorship and Violence Crisis, Growing Anger Levels Against Slop Sold as "Intelligence"
Links for the day
Microsoft's "valuation depends on infrastructure that does not exist."
Indeed
The Typical Trajectory: Datamation Began Experimenting With LLM Slop for Fake Articles. Then Datamation Died. (Last Month)
It's always ending up this way
Accounts or Devices (e.g. Phones) That Get 'Burnt' Have Many Pitfalls
Embassies and consulates habitually fail at this
Avoiding the Spooks (Nobody Watches the Watchers, They're Practically Unaccountable)
If more people adopt encryption, it'll be easier for us to deal with whistleblowers
Protecting Whistleblowers Requires Technical Knowledge/Skills
even the highest media judges aren't aware of how to protect sources
At Least 5 Women Quit Brett Wilson LLP in Recent Months. It's the Firm That Attacked My Wife and I on Behalf of Americans (One of Them Strangled Women).
It seems like good news that the women escape this workplace
Slop About Slop and Slop About "Linux"
In short, avoid slopfarms
Report/Benchmark Says 'Vibe Coding' Results in Security Holes
There are risks they don't like talking about
EPO Abuses Covered in Spanish
Knowing what we know (and heard/saw), the sinister silence of the media is perceived by some to be complicity of the lower order.
Richard Stallman Encourages "ICE Out For Good" Protests, His Opponents Do Not (Passive and Uncaring About Human Rights)
He has done a lot philosophically, politically, and so on
Record Traffic in Geminispace or Over Gemini Protocol
it's never too late to join
The "Alicante Mafia" - Part III - Europe's Second-Largest Organisation on Strike, Protests, Other Industrial Actions to Come Impacting Over 95% of the Workforce
The EPO's management is highly evasive, weak, and vulnerable
Claim That IBM Marked 15% of its Workforce for Potential Layoffs
No wonder we keep hearing from Red Hat people who say they hate IBM
Over at Tux Machines...
GNU/Linux news for the past day
IRC Proceedings: Friday, January 16, 2026
IRC logs for Friday, January 16, 2026