# Blue screen: UNEXPECTED_STORE_EXCEPTION (0x00000154)

**Code:** `UNEXPECTED_STORE_EXCEPTION` · **Category:** Windows · **Seen on:** Windows

The memory/store manager hit an exception — commonly a failing SSD/HDD, outdated storage drivers, or antivirus.

## Meaning

Despite the name, it isn’t about the Microsoft Store. Disk health problems, Fast Startup, and third-party antivirus are most often involved.

## Common causes

- Failing or outdated SSD/HDD firmware
- Storage driver issues
- Fast Startup
- Third-party antivirus

## Quick fix

1. Check disk health (SMART) and update SSD firmware
2. Disable Fast Startup
3. Remove third-party antivirus to test

## Detailed fix by platform

### Windows

1. 

```powershell
Get-PhysicalDisk | Get-StorageReliabilityCounter | Select Temperature, Wear, ReadErrorsTotal
powercfg /h off
```


## How to diagnose

1. **Disk** — SMART/health status
2. **Startup** — Fast Startup on?
3. **AV** — Installed?

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Source: [WhatIsMyError](https://whatismyerror.com/errors/windows/unexpected-store-exception)