Re: Installation of MySql 9.1 after the last Win 11 update does not run correctly

[Arena Noor]

Hi Peter,

Thanks for sharing the detailed log — that really helps. The key part is this line:

Process for mysqld, with ID 15552, was run successfully and exited with code -1073741819.
Database initialization failed.


That exit code usually indicates an access violation or compatibility issue, which has been reported after recent Windows 11 updates. A few things you can try:

Run installer as Administrator

Make sure both the installer and MySQL Configurator are run with elevated privileges.

Check folder permissions

Ensure that C:\MySQL\data (or wherever your data directory is set) has full read/write permissions for NETWORK SERVICE and SYSTEM.

Delete and re-create the data folder

Sometimes a partial initialization leaves corrupt files. Remove the data folder, then let the configurator create a fresh one.

Run initialization manually

Open a command prompt as Admin and try:

mysqld --initialize-insecure --console


This can give more detailed error output than the Configurator.

Check Windows Event Viewer

Look under Windows Logs > Application for MySQL crash entries. They often point to missing DLLs or conflicting services.

Verify Visual C++ Redistributable

MySQL 9.x requires the latest Microsoft Visual C++ Redistributable for Visual Studio 2022 (x64). If it’s missing or outdated, initialization can fail.

If none of the above works, you may want to test with MySQL 8.4 LTS (currently the most stable branch) until 9.1 is patched for Win 11’s latest update.

Let us know what you find from the manual --initialize-insecure attempt — that should narrow down the root cause.