What are mutex_instances_91.sdi Error Messages?

General mutex_instances_91.sdi Runtime Errors

mutex_instances_91.sdi file errors often occur during the startup phase of MySQL Database Server, but can also occur while the program is running. These types SDI errors are also known as “runtime errors” because they occur while MySQL Database Server is running. Here are some of the most common mutex_instances_91.sdi runtime errors:

• mutex_instances_91.sdi could not be found.
• mutex_instances_91.sdi error.
• mutex_instances_91.sdi failed to load.
• Error loading mutex_instances_91.sdi.
• Failed to register mutex_instances_91.sdi / Cannot register mutex_instances_91.sdi.
• Runtime Error - mutex_instances_91.sdi.
• The file mutex_instances_91.sdi is missing or corrupt.

Most SDI errors are due to missing or corrupt files. Your mutex_instances_91.sdi file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with MySQL Database Server), or deleted by a malware infection. Furthermore, mutex_instances_91.sdi file corruption could be caused from a power outage when loading MySQL Database Server, system crash while loading or saving mutex_instances_91.sdi, bad sectors on your storage media (usually your primary hard drive), or malware infection. Thus, it’s critical to make sure your anti-virus is kept up-to-date and scanning regularly.

How to Fix mutex_instances_91.sdi Errors in 3 Steps (Time to complete: ~5-15 minutes)

If you're encountering one of the error messages above, follow these troubleshooting steps to resolve your mutex_instances_91.sdi issue. These troubleshooting steps are listed in the recommended order of execution.

To begin System Restore (Windows XP, Vista, 7, 8, and 10):

1. Hit the Windows Start button
2. When you see the search box, type "System Restore" and press "ENTER".
3. In the search results, find and click System Restore.
4. Please enter the administrator password (if applicable / prompted).
5. Follow the steps in the System Restore Wizard to choose a relevant restore point.
6. Restore your computer to that backup image.

If the Step 1 fails to resolve the mutex_instances_91.sdi error, please proceed to the Step 2 below.

You can uninstall MySQL Database Server software by following these instructions (Windows XP, Vista, 7, 8, and 10):

1. Hit the Windows Start button
2. In the search box, type "Uninstall" and press "ENTER".
3. In the search results, find and click "Add or Remove Programs"
4. Find the entry for MySQL Database Server 8.0.16.0 and click "Uninstall"
5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall MySQL Database Server software.

If this Step 2 fails as well, please proceed to the Step 3 below.

MySQL Database Server 8.0.16.0

My SQL Community

When the first two steps haven't solved your issue, it might be a good idea to run Windows Update. Many mutex_instances_91.sdi error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

1. Hit the Windows Start button
2. In the search box, type "Update" and press "ENTER".
3. In the Windows Update dialog box, click "Check for Updates" (or similar button depending on your Windows version)
4. If updates are available for download, click "Install Updates".
5. After the update is completed, restart your PC.

If Windows Update failed to resolve the mutex_instances_91.sdi error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.

If Those Steps Fail: Download and Replace Your mutex_instances_91.sdi File (Caution: Advanced)

If none of the previous three troubleshooting steps have resolved your issue, you can try a more aggressive approach (Note: Not recommended for amateur PC users) by downloading and replacing your appropriate mutex_instances_91.sdi file version. We maintain a comprehensive database of 100% malware-free mutex_instances_91.sdi files for every applicable version of MySQL Database Server. Please follow the steps below to download and properly replace you file:

1. Locate your Windows operating system version in the list of below "Download mutex_instances_91.sdi Files".
2. Click the appropriate "Download Now" button and download your Windows file version.
3. Copy this file to the appropriate MySQL Database Server folder location:
   
   Windows 10: C:\ProgramData\MySQL\MySQL Server 8.0\Data\performance_schema\
   
4. Restart your computer.

If this final step has failed and you're still encountering the error, you're only remaining option is to do a clean installation of Windows 10.

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