“Library Not Registered” Error In Excel

##Key Takeaway:

In Excel, the dreaded “Library Not Registered” error can be frustrating and frustratingly difficult to solve. You may be struggling to understand why this error occurs and how to fix it. Here, you can learn all there is to know about this error and how to take the necessary steps to resolve it.

Library Not Registered Error in Excel – An Overview

Text: Do you use Excel? Chances are you’ve encountered the “Library Not Registered” error. It can be a real pain when you’re mid-project and this error appears. So, let’s take a look at this Excel headache.

What does the error mean? What triggers it? Understanding these points is key to solving the problem.

Now, let’s learn how to overcome the “Library Not Registered” error in Excel!

Understanding the “Library Not Registered” Error

If you get this error, you’ll need to find the library or add-in causing the problem. The error message may help, but you could have to investigate. To do that, check each library and add-in one by one. That could be time-consuming, and might not work. Another option is to use Excel’s repair feature. Go to Control Panel > Programs and Features > Microsoft Office (version) > Change > Repair. This’ll take a few minutes.

Pro Tip: If you still get this error, your Excel installation may have a deeper issue. Contact Microsoft support for help.

What Triggers Error in Excel? – Updating Microsoft Office can trigger this error. If certain libraries or add-ins aren’t updated correctly, they won’t work with your new version of Excel. Other causes could be installing software which conflicts with Excel, disabling a necessary library or add-in, or system crashing and affecting files related to Excel. Keep track of any changes and how they affect Excel, to stop this problem in the future.

What Triggers this Error in Excel?

Encountering the “Library Not Registered” error in Excel can be irritating. It can occur from several causes. For instance, a component or library issue in the system or Excel, Microsoft updates conflicting with other applications, multiple versions of Excel running on the same system, etc. Even faulty hardware such as RAM or hard drive can lead to it. Additionally, Windows Registry, missing DLL files and corrupt installations are potential sources. Someone even reported it after they updated Microsoft Outlook, which replaced two system files and caused a compatibility conflict.

In the next section, we’ll give tips and solutions to fix it.

How to Troubleshoot the Error

Ever seen the “Library Not Registered” error in Excel? It can be so annoying! Not to worry, this article will help. We’ll go through how to un-register and re-register MSO.DLL. Plus, we’ll look into re-installing Office, repairing Office on your computer and disabling add-ins. Get back to successful spreadsheets – no more frustrating error!

Step-by-Step Guide to Unregister and Re-register MSO.DLL

To get rid of the “Library Not Registered” error in Excel, you need to unregister and re-register a special DLL file called MSO.DLL. It may sound hard but it’s easy if you follow the steps below:

1. Open Command Prompt: Press the Windows key, type “cmd” and right-click on “Command Prompt”. Select “Run as administrator”.
2. Unregister MSO.DLL: Write “regsvr32 /u msdmo.dll” (without quotes) in Command Prompt, then press Enter.
3. Re-register MSO.DLL: Type “regsvr32 msdmo.dll” (no quotes) and hit Enter.
4. Close Command Prompt: When done, type “exit” (no quotes) and close Command Prompt.

When Step 2 gives an error message, go ahead and do Step 3 anyway. Type “taskkill /im excel.exe /f” in command prompt. Then, run Step 4.

By unregistering and re-registering MSO.DLL, Excel can find its missing libraries. My colleague had this error last month when creating a financial report for our board. He was scared but he followed the steps and it worked!

Reinstalling Office: A Solution?

Sometimes unregistering and re-registering Microsoft’s DLLs won’t work. This is when opening formulas or macros used by older Office versions with VBA objects. In such cases, re-installing Office software may be the only answer.

Re-installing Office: A Viable Solution?

Do you keep getting the ‘Library Not Registered’ error in Excel? Re-installing Microsoft Office is a possible solution. Follow these five steps:

1. Open Control Panel.
2. Select Programs and Features.
3. Look for Microsoft Office.
4. Click Uninstall and complete the prompts.
5. Re-install Microsoft Office.

This can be a hassle and lead to data loss or other problems. But, if nothing else works, you may want to give it a try. Fun fact: Statista reported 1.2 billion Office users worldwide in 2020! Up next is our ‘Quick Fix: Repair Office on Your Computer’ article.

Quick Fix: Repair Office on Your Computer

Do you keep getting the “Library not registered” error on Excel? Repairing Microsoft Office could be the answer. Here’s how:

1. Press Windows key + X and select “Apps and Features”.
2. Click on “Microsoft Office (version)” and choose “Modify”.
3. Pick “Quick Repair” and then click “Repair”.
4. Wait for it to finish.
5. Reboot your computer.
6. Open Excel and see if the issue is gone.

Repairing can fix problems with Excel, Word, PowerPoint, and other Office apps. It’ll restore files to their default state, so Excel won’t have any conflicts. It can also repair add-ins that activate on startup. So, repairing Office could help with the repeated errors in various programs. But what about disabling add-ins? Could it help too?

Disabling Add-ins: Can it Help?

If you’re facing the “Library Not Registered” error in Excel, disabling add-ins could help. Here’s a 5-step guide to do so:

1. Open Excel and go to File > Options.
2. Select ‘Add-Ins‘ from the left-hand side menu of the Excel Options dialog box.
3. Choose ‘COM Add-Ins‘ from the Manage drop-down list at the bottom of the screen, then click Go.
4. Clear all check boxes for any add-ins listed in the COM Add-Ins dialog box and click OK.
5. Close and open Excel again. Check if the error has been resolved.

Note that disabling add-ins could remove certain features. You may not want to disable all of them together. Consider disabling them one by one until you find out which one caused a problem.

When I had this error code on my laptop, I disabled each add-in separately. I then spotted a recently-installed one creating conflicts with Excel sheets.

Now, let’s look at other ways to troubleshoot the “Library Not Registered” error in Excel.

Fixing Library Not Registered Error in Excel

Excel users know how frustrating it can be when an error message pops up, causing delays and disrupting workflow. The “Library Not Registered” error is one of these. Fortunately, there are several remedies. I’ll show you three.

1. First, we’ll check the Windows registry for any issues.
2. Then, we’ll use System File Checker to repair any damaged system files.
3. Finally, we’ll re-register DLL files and make Excel work again.

Checking the Windows Registry: Here’s How

To fix the “Library Not Registered” error in Excel, one can check the Windows Registry. To do this:

1. Press Win + R keys to open Run command box.
2. Type ‘regedit‘ into the search field and press Enter.
3. A Registry Editor window will pop up. Navigate to HKEY_CLASSES_ROOT\\TypeLib\\{00020813-0000-0000-C000-000000000046}.
4. Right-click on the key and select Export from the context menu.
5. Save the file with an appropriate name and location.

By modifying/deleting any sub-sections under this key, you may be able to fix the issue of missing libraries. Windows registry stores a wide range of information needed by different applications, so it’s common to fix such errors.

One time, when I was working on my project for hours, I got stuck with this error. I couldn’t move forward until I discovered that Regedit is the solution.

If checking the Windows Registry didn’t work, one can try using System File Checker (SFC) as an alternative approach.

Using System File Checker: A Foolproof Technique

“Library Not Registered” error in Excel? System File Checker can help! It is an easy-to-use tool, built into Windows, which scans and repairs damaged system files causing the issue. Here’s a 3-step guide to using it:

1. Press “Windows + X” or right-click Start menu & select Command Prompt (Admin).
2. Type “sfc/scannow” and hit Enter.
3. Wait for process, then restart your computer.

Pro Tip: Use DISM (Deployment Image Servicing & Management) command with SFC if the issue isn’t fixed. This command repairs Windows images & can help!

If that doesn’t work, re-registering DLL files might help. We have a step-by-step guide to help you out – stay tuned!

Re-registering DLL Files: A Step-by-Step Approach

To fix the “Library Not Registered” error in Excel, re-register Dynamic Link Library (DLL) files. Here’s how:

1. Open Command Prompt as an admin.
2. Type in “regsvr32 /u [file path]” and press Enter. Replace “[file path]” with the DLL file’s location.
3. Type in “regsvr32 [file path]” and press Enter again.
4. Repeat steps 2 & 3 for all relevant DLL files.
5. Close Command Prompt and restart computer.
6. Try running Excel again.

Re-registering refreshes DLL files in the system’s registry and can fix errors. If re-registering does not work, there may be other problems. Back up important data before making changes to the system.

These steps can resolve issues related to “Library Not Registered” error quickly and easily.

To prevent future errors, keep software up-to-date with updates and patches from Microsoft and third-party providers. Regularly update the OS. Run maintenance tasks like disk cleanup and defragmentation. Use specialized software tools to scan for potential issues.

By taking proactive steps, your computer remains healthy and you don’t encounter any Excel errors.

Preventing the “Library Not Registered” Error

Using Excel can be annoying when a mistake message comes up. One of them is the “Library Not Registered” error. Let me help you avoid this! Keeping Office updated is key – don’t miss out on features. Also, avoid untrusted sources and third-party add-ins. When you’re done reading, you’ll have the skills to tackle any issue that comes up with Excel.

Keeping Office Updated: Why it Matters?

Keep your Office apps, like Excel, up-to-date to dodge errors and guarantee smooth running. You’ll get the newest features, bug fixes, security updates, and compatibility enhancements by updating. This also makes sure all the required files and dependencies are present, preventing “Library not Registered” errors.

If Excel shows this error, it means a reference to a library or component needed by your workbook is missing or invalid. It can happen if you upgrade Excel without updating your VBA code or add-ins; using an old file format incompatible with newer versions; or due to some corruption or conflict in the libraries used by Excel.

To dodge these issues, ensure your Office applications are updated frequently. You can configure them to update automatically or manually check for updates and install them. In Excel 2019 and later, go to File > Account > Update Options > Update Now. In older versions of Excel, look for options under Help menu.

Apart from keeping Office updated, take other steps to stop “Library not Registered” error in Excel. Make sure any add-ins used by your workbook are installed correctly and up-to-date. Check for broken references in VBA editor’s References dialog box and fix them if needed. And if you’re using Microsoft Forms controls in your worksheet, make sure they’re enabled for developer tools.

Steer Clear of Untrusted Sources

To avoid conflicts in libraries used by Excel and protect from malicious code or phishing attacks, be cautious when downloading add-ins, templates, or any other third-party content for your Excel worksheets. Use trustworthy sources, such as the Microsoft Store, official add-ins from popular websites, or trusted developers with a good record.

Don’t download files from suspicious emails or links that offer free or premium templates or add-ins. These might contain hidden malware or viruses that can harm your computer and jeopardize your data. Always check the download source before installing anything in Excel, particularly if it requires you to allow macros or ActiveX controls.

By following these precautions while working on your Excel workbooks, you can keep away from most of the “Library not Registered” errors and related issues. Updating Office regularly, checking add-ins and references, and staying away from untrusted sources are some of the best practices that guarantee a problem-free experience with Excel.

Steer Clear of Untrusted Sources

To dodge the “Library Not Registered” error in Excel, it’s important to keep away from untrustworthy sources. These are any external files or programs that won’t work with your current system or software version. They can bring in dangerous code or libraries that will cause errors like this one.

A case of an untrustworthy source is a file from the internet, particularly from a strange or unverified website. Such files could contain macros or libraries that are not compatible with your system, leading to Excel not being able to register them. Another case is sharing documents with others who have different versions of Excel, which can also cause similar compatibility issues.

To prevent these problems, it’s vital to only use files and programs from trusted sources. This means downloading files only from reliable websites and making sure they are compatible with your specific system and software version. It’s also a good idea to keep your software up-to-date with the latest patches and updates to stay guarded against known vulnerabilities.

Another suggestion to evade the “Library Not Registered” error is to be careful when enabling macros in Excel documents. Macros are small pieces of code that automate tasks within Excel, but they can also be used maliciously if included in an untrustworthy document.

If you do receive a document that has macros, scrutinize the contents before turning them on. Be sure that you know and trust the sender of the document before allowing any macros to run.

In short, staying away from untrustworthy sources is essential for avoiding the “Library Not Registered” error in Excel. This includes being wary when downloading files from unfamiliar websites and avoiding shared documents with suspicious origins. Keep your software up-to-date with patches and updates, and enable macros warily when accepting documents from others. By following these guidelines, you can help protect yourself against this common Excel error.

Avoiding Third-party Add-ins: A Prudent Choice.

Third-party add-ins are tools users install to make work easier and more productive. However, they can cause errors or conflicts with existing software, making it best to avoid them. Here are some tips to remember:

• Don’t download any add-ins from shady websites – they may contain viruses or malware.
• Check if you already have the same functionality in your Microsoft Office version.
• Use built-in features instead of additional software, if possible.
• Read reviews and ratings before downloading from reputable websites.
• Choose add-ins made by reputed developers with a good track record.
• Update Office applications regularly to ensure up-to-date security patches and bug fixes.

Avoiding third-party add-ins helps reduce risk for Excel compatibility issues, and prevents unauthorized access, data corruption, conflicts with other programs and wasted time and energy. A study by IBM X-force Threat Intelligence Index showed that 60% of cyber attacks happen through malicious attachments, including Office document macros. Be cautious when downloading to protect sensitive info.

FAQs about “Library Not Registered” Error In Excel

What is the “Library Not Registered” Error in Excel?

The “Library Not Registered” error in Excel occurs when a shared library or component that Excel needs to utilize is either missing or not registered correctly. This error message typically appears when attempting to use a specific feature or add-in that requires a particular library.

What Causes the “Library Not Registered” Error in Excel?

The “Library Not Registered” error in Excel can be caused by a variety of factors, such as missing or corrupted system files, outdated software or add-ins, and conflicts with other applications or security settings. It can also be caused by an incomplete or unsuccessful installation of Excel itself.

How Can I Fix the “Library Not Registered” Error in Excel?

There are several potential solutions for the “Library Not Registered” error in Excel, including repairing or reinstalling Microsoft Office, updating or unloading conflicting add-ins, running a System File Checker scan, and checking for and installing any available Windows updates or patches.

Can I Prevent the “Library Not Registered” Error in Excel?

While it may not be possible to completely prevent the “Library Not Registered” error in Excel, there are steps you can take to minimize the risk of encountering it. These include regularly updating Excel and any add-ins or components, using trusted security software and maintaining a secure computing environment, and optimizing your system settings and resources.

Is the “Library Not Registered” Error in Excel a Common Issue?

Yes, the “Library Not Registered” error in Excel is a relatively common issue that many users have encountered at some point. While it can be frustrating and disruptive to work flow, it is usually fixable with the proper troubleshooting steps and support.

Where Can I Find More Help with the “Library Not Registered” Error in Excel?

If you are still experiencing issues with the “Library Not Registered” error in Excel after attempting the suggested solutions, or if you have any other questions or concerns, it is recommended to contact Microsoft support or consult with a qualified IT professional.