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REF_UNKNOWN_LOGON_SESSION Blue Screen Error [Solved]
Creating a new user profile can quickly fix the BSOD
5 min. read
Updated onSeptember 23, 2024
updated onSeptember 23, 2024
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To fix various driver issues on your PC, you will need a dedicated tool to find the freshest and the original drivers. You can use PC HelpSoft Driver Updater to do it in 3 easy steps:
TheREF_UNKNOWN_LOGON_SESSIONBSOD error crashes Windows at startup and leads to a blue screen displaying the0x00000047error code. According to Microsoft, it’s extremely uncommon, and even I could find only a few reported cases on the web!
The error is caused by problematic drivers, a corrupt user profile, issues with the disk and RAM, buggy Windows updates, and conflicting third-party programs.
Before you start troubleshooting, install all available Windows updates, including the optional ones, make sure all the connections are in order, and disconnect non-critical peripherals from the PC.
How can I fix REF_UNKNOWN_LOGON_SESSION?
1. Reinstall the corrupt drivers
2. Update all the drivers
If Windows can’t find a better version whileupdating the drivers, head to the manufacturer’s website, locate the newest release, and thenmanually install the latest driver. Because in 2 out of 5 cases, it’s the drivers to blame for theREF_UNKNOWN_LOGON_SESSIONerror!
3. Repair the corrupt system files
4. Uninstall conflicting programs
5. Create a new user profile
If theREF_UNKNOWN_LOGON_SESSIONerror with code0x47is fixed, you can move files from the affected profile to the new profile using an external hard drive. As for the programs, you can reinstall them ormake apps available to all usersin Windows.
6. Repair disk and RAM issues
6.1 Inspect and repair the disk
TheCheck Diskutilityincludes different repair options, each accessible via a different command parameter.So, if/rdoesn’t work, try the other ones until the disk issues are detected and repaired.
6.2 Inspect the RAM
If no issues are found, I recommend you tryMemTest86+, an open-source tool that runs a wide array of tests on the individual RAM modules and detects almost every problem. Since it takes several hours, let the tool run overnight for the best results!
7. Reset Windows
As a last resort, you canreset Windows to factory defaults. Remember, while you can keep the files during a reset, it’s best to remove everything. The latter is more likely to solve theREF_UNKNOWN_LOGON_SESSIONBSOD!
When nothing works, get the PC inspected by a professional for hardware malfunction, loose connections, or damaged cables. Because, at this point, one of these is likely to be the underlying cause!
Before you leave, discoverexpert tips to keep your Windows PC safe. You can also learn how to deal with a similar issue,ERROR_SEM_USER_LIMIT.
Which fix worked for you? Share with our readers in the comments section.
More about the topics:Blue Screen of Death,BSoD error codes,windows error
Kazim Ali Alvi
Windows Hardware Expert
Kazim has always been fond of technology, be it scrolling through the settings on his iPhone, Android device, or Windows PC. He’s specialized in hardware devices, always ready to remove a screw or two to find out the real cause of a problem.
Long-time Windows user, Kazim is ready to provide a solution for your every software & hardware error on Windows 11, Windows 10 and any previous iteration. He’s also one of our experts in Networking & Security.
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Kazim Ali Alvi
Windows Hardware Expert
Kazim is specialized in hardware devices, always ready to remove a screw or two to find out the real cause of a problem.
