Check this out on a Plesk Windows server running for about 1.5 years:
Session_ffe4a08c315a56130c2301766338d4c4 Session_ffe6433196280ed299b2c9fba24456fe
Session_ffe7cebb2ddbd91bc3374e9870f54319 Session_ffe7e7718dfb7c5c05b251a80f23c48e
Session_ffe7f3dbf082e1aec6b5a8fb2a8ff129 Session_ffe8567a1648d9c62f4223182b8e20d2
Session_ffe89c86bb3e4d30d0fbfd4fb78548ea Session_ffe8f7ab7343d3dc257380cef0201cfe
Session_ffe9208c1e899711e7ce7a9628107329 Session_ffeb302f71887f789efd2e4c85a5d414
Session_ffed71d83d1a1c57905a69e881dbf2bf Session_ffeddafa8a22e7e6ef1f027db90f9cb2
Session_ffefe5af4c36bca20279442de7de33cc Session_fff03c91251110919c57f1f134304097
Session_fff0999188f3ae35063ffe11b1fadc86 Session_fff0eb7f02a46d4531104c174e08579b
Session_fff20a66fce1f6ab6aa542984c601cfb Session_fff252426ae5de87824ecb1ca70e04b2
Session_fff3211da3957e93dd91521d67fe24c0 Session_fff34574445db30b5fe25b4d2fdb3dda
Session_fff3e6dce1931b4d89874a7b594aec99 Session_fff4737d406454f8faf4811cf187d411
Session_fff55daffd8496413258402f4f39264c Session_fff5a70137978f4daf252e47af7b3c4b
Session_fff5a82e468bba0e443fe095d0d8f70b Session_fff761162e8ad7fd35858322a3a5b37b
Session_fff7bfd765b27a3680859c1074010d22 Session_fff8629a88cdbfbb29ceca1df62f1339
Session_fff9ec3dce7db7f70986388fa41e070d Session_fffa80193a257c11814750e1df00a27b
Session_fffbb417c12df34d0f77ba341c9779ce Session_fffbb9d91681f59d43ab959adbe9e86b
Session_fffc6ac7af1da46f6826ccc15c7346b8 Session_fffd2337dbec889abe92509e997d68cb
Session_fffe511abaea235d6e81cc24a255ff49 Session_fffe9dee344f6e8385e7757df5f61977
Session_ffffbe714726e991b51fab56b7fe3680 sess_2711a798859da044e5ba261ecaf1c010
sess_3f787fd1ce2ae63052487bbab9f47f83 sess_6e5d45d77292a8d84b0919fe3d9da424
sess_8749f64842b869f423274f86aa6d8a2c sess_bc1b77e2bb07bc7f582a9f7809fead51
113058 File(s) 19,508,336 bytes
2 Dir(s) 105,173,372,928 bytes free
C:\Program Files\SWsoft\Plesk\admin\sessions>
Having 113058 file in one folder is detrimental to Windows. Please write code to clean up this folder.
Session_ffe4a08c315a56130c2301766338d4c4 Session_ffe6433196280ed299b2c9fba24456fe
Session_ffe7cebb2ddbd91bc3374e9870f54319 Session_ffe7e7718dfb7c5c05b251a80f23c48e
Session_ffe7f3dbf082e1aec6b5a8fb2a8ff129 Session_ffe8567a1648d9c62f4223182b8e20d2
Session_ffe89c86bb3e4d30d0fbfd4fb78548ea Session_ffe8f7ab7343d3dc257380cef0201cfe
Session_ffe9208c1e899711e7ce7a9628107329 Session_ffeb302f71887f789efd2e4c85a5d414
Session_ffed71d83d1a1c57905a69e881dbf2bf Session_ffeddafa8a22e7e6ef1f027db90f9cb2
Session_ffefe5af4c36bca20279442de7de33cc Session_fff03c91251110919c57f1f134304097
Session_fff0999188f3ae35063ffe11b1fadc86 Session_fff0eb7f02a46d4531104c174e08579b
Session_fff20a66fce1f6ab6aa542984c601cfb Session_fff252426ae5de87824ecb1ca70e04b2
Session_fff3211da3957e93dd91521d67fe24c0 Session_fff34574445db30b5fe25b4d2fdb3dda
Session_fff3e6dce1931b4d89874a7b594aec99 Session_fff4737d406454f8faf4811cf187d411
Session_fff55daffd8496413258402f4f39264c Session_fff5a70137978f4daf252e47af7b3c4b
Session_fff5a82e468bba0e443fe095d0d8f70b Session_fff761162e8ad7fd35858322a3a5b37b
Session_fff7bfd765b27a3680859c1074010d22 Session_fff8629a88cdbfbb29ceca1df62f1339
Session_fff9ec3dce7db7f70986388fa41e070d Session_fffa80193a257c11814750e1df00a27b
Session_fffbb417c12df34d0f77ba341c9779ce Session_fffbb9d91681f59d43ab959adbe9e86b
Session_fffc6ac7af1da46f6826ccc15c7346b8 Session_fffd2337dbec889abe92509e997d68cb
Session_fffe511abaea235d6e81cc24a255ff49 Session_fffe9dee344f6e8385e7757df5f61977
Session_ffffbe714726e991b51fab56b7fe3680 sess_2711a798859da044e5ba261ecaf1c010
sess_3f787fd1ce2ae63052487bbab9f47f83 sess_6e5d45d77292a8d84b0919fe3d9da424
sess_8749f64842b869f423274f86aa6d8a2c sess_bc1b77e2bb07bc7f582a9f7809fead51
113058 File(s) 19,508,336 bytes
2 Dir(s) 105,173,372,928 bytes free
C:\Program Files\SWsoft\Plesk\admin\sessions>
Having 113058 file in one folder is detrimental to Windows. Please write code to clean up this folder.