Search notes:

Registry: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem

Some values under this registry key are:

DisableDeleteNotification
FilterSupportedFeaturesMode
LongPathsEnabled
NtfsAllowExtendedCharacter8dot3Rename
NtfsBugcheckOnCorrupt
NtfsDisable8dot3NameCreation
NtfsDisableCompression
NtfsDisableEncryption
NtfsDisableLastAccessUpdate
NtfsDisableLfsDowngrade
NtfsDisableVolsnapHints
NtfsEncryptPagingFile
NtfsMemoryUsage
NtfsMftZoneReservation
NtfsQuotaNotifyRate
RefsDisableLastAccessUpdate
ScrubMode
SymlinkLocalToLocalEvaluation
SymlinkLocalToRemoteEvaluation
SymlinkRemoteToLocalEvaluation
SymlinkRemoteToRemoteEvaluation
UdfsCloseSessionOnEject
UdfsSoftwareDefectManagement
Win31FileSystem
Win95TruncatedExtensions

LongPathsEnabled

Beginning with Windows 10 (Version 1607), setting LongPathsEnabled to 1 apparently allows to have filenames longer than 255 or 260.

As soon as a process performs a call to a Win32 file or directory function, the set value will be cached on a per process basis. During the lifetime of a process, the value won't be re-read.

The value can also be modified with Group Policy at Computer Configuration -> Administrative Templates -> System -> Filesystem -> Enable NTFS long paths.

See also Maximum length of path names

Fatal error: Uncaught PDOException: SQLSTATE[HY000]: General error: 8 attempt to write a readonly database in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php:78 Stack trace: #0 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(78): PDOStatement->execute(Array) #1 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(30): insert_webrequest_('/notes/Windows/...', 1745433891, '18.218.195.15', 'Mozilla/5.0 App...', NULL) #2 /home/httpd/vhosts/renenyffenegger.ch/httpsdocs/notes/Windows/registry/tree/HKEY_LOCAL_MACHINE/System/CurrentControlSet/Control/FileSystem/index(75): insert_webrequest() #3 {main} thrown in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php on line 78