diff --git a/.github/workflows/ruff.yml b/.github/workflows/ruff.yml
index 52e7024b..1b400519 100644
--- a/.github/workflows/ruff.yml
+++ b/.github/workflows/ruff.yml
@@ -8,12 +8,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: chartboost/ruff-action@v1
+      - uses: astral-sh/ruff-action@v1.1.0
 
   ruff_format:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: chartboost/ruff-action@v1
+      - uses: astral-sh/ruff-action@v1.1.0
         with:
           args: format --check --diff
diff --git a/m3u8/__init__.py b/m3u8/__init__.py
index d11dbf30..f6fc5174 100644
--- a/m3u8/__init__.py
+++ b/m3u8/__init__.py
@@ -90,7 +90,8 @@ def load(
     Retrieves the content from a given URI and returns a M3U8 object.
     Raises ValueError if invalid content or IOError if request fails.
     """
-    if urlsplit(uri).scheme:
+    base_uri_parts = urlsplit(uri)
+    if base_uri_parts.scheme and base_uri_parts.netloc:
         content, base_uri = http_client.download(uri, timeout, headers, verify_ssl)
         return M3U8(content, base_uri=base_uri, custom_tags_parser=custom_tags_parser)
     else:
diff --git a/m3u8/mixins.py b/m3u8/mixins.py
index 162b82a1..40ffb2fc 100644
--- a/m3u8/mixins.py
+++ b/m3u8/mixins.py
@@ -9,8 +9,10 @@ def absolute_uri(self):
             return None
 
         ret = urljoin(self.base_uri, self.uri)
-        if self.base_uri and (not urlsplit(self.base_uri).scheme):
-            return ret
+        if self.base_uri:
+            base_uri_parts = urlsplit(self.base_uri)
+            if (not base_uri_parts.scheme) and (not base_uri_parts.netloc):
+                return ret
 
         if not urlsplit(ret).scheme:
             raise ValueError("There can not be `absolute_uri` with no `base_uri` set")
diff --git a/m3u8/model.py b/m3u8/model.py
index 7f293d1f..9bc16071 100644
--- a/m3u8/model.py
+++ b/m3u8/model.py
@@ -1294,7 +1294,7 @@ def __str__(self):
 
 
 class RenditionReport(BasePathMixin):
-    def __init__(self, base_uri, uri, last_msn, last_part=None):
+    def __init__(self, base_uri, uri, last_msn=None, last_part=None):
         self.base_uri = base_uri
         self.uri = uri
         self.last_msn = last_msn
@@ -1303,7 +1303,8 @@ def __init__(self, base_uri, uri, last_msn, last_part=None):
     def dumps(self):
         report = []
         report.append("URI=" + quoted(self.uri))
-        report.append("LAST-MSN=" + str(self.last_msn))
+        if self.last_msn is not None:
+            report.append("LAST-MSN=" + str(self.last_msn))
         if self.last_part is not None:
             report.append("LAST-PART=" + str(self.last_part))
 
diff --git a/tests/playlists.py b/tests/playlists.py
index c3403dbc..b2435d2e 100755
--- a/tests/playlists.py
+++ b/tests/playlists.py
@@ -1111,6 +1111,58 @@
 #EXT-X-RENDITION-REPORT:URI="../4M/waitForMSN.php",LAST-MSN=273,LAST-PART=3
 """
 
+LOW_LATENCY_OMITTED_ATTRIBUTES = """
+#EXTM3U
+#EXT-X-VERSION:7
+#EXT-X-TARGETDURATION:2
+#EXT-X-SERVER-CONTROL:CAN-BLOCK-RELOAD=YES,PART-HOLD-BACK=2.171
+#EXT-X-PART-INF:PART-TARGET=1.034
+#EXT-X-MAP:URI="init_data.m4s"
+#EXT-X-MEDIA-SEQUENCE:6342
+#EXT-X-PROGRAM-DATE-TIME:2024-09-24T15:31:57.350+00:00
+#EXTINF:2,
+chunk_6342.m4s
+#EXT-X-PROGRAM-DATE-TIME:2024-09-24T15:31:59.350+00:00
+#EXTINF:2,
+chunk_6343.m4s
+#EXT-X-PROGRAM-DATE-TIME:2024-09-24T15:32:01.350+00:00
+#EXTINF:2,
+chunk_6344.m4s
+#EXT-X-PROGRAM-DATE-TIME:2024-09-24T15:32:03.350+00:00
+#EXTINF:2,
+chunk_6345.m4s
+#EXT-X-PROGRAM-DATE-TIME:2024-09-24T15:32:05.350+00:00
+#EXTINF:2,
+chunk_6346.m4s
+#EXT-X-PROGRAM-DATE-TIME:2024-09-24T15:32:07.350+00:00
+#EXTINF:2,
+chunk_6347.m4s
+#EXT-X-PROGRAM-DATE-TIME:2024-09-24T15:32:09.350+00:00
+#EXTINF:2,
+chunk_6348.m4s
+#EXT-X-PROGRAM-DATE-TIME:2024-09-24T15:32:11.350+00:00
+#EXT-X-PART:DURATION=1,URI="chunk_6349.0.m4s",INDEPENDENT=YES
+#EXT-X-PART:DURATION=1,URI="chunk_6349.1.m4s"
+#EXTINF:2,
+chunk_6349.m4s
+#EXT-X-PROGRAM-DATE-TIME:2024-09-24T15:32:13.350+00:00
+#EXT-X-PART:DURATION=1,URI="chunk_6350.0.m4s",INDEPENDENT=YES
+#EXT-X-PART:DURATION=1,URI="chunk_6350.1.m4s"
+#EXTINF:2,
+chunk_6350.m4s
+#EXT-X-PROGRAM-DATE-TIME:2024-09-24T15:32:15.350+00:00
+#EXT-X-PART:DURATION=1,URI="chunk_6351.0.m4s?skid=default&signature=NjZmYzFjODBfYzY3NGRlODc4Zjk1MjM1OGNmMmE3NjhiM2E2NTUyNGI1Y2JiYzMyZDU5YTFjNTQzODI2MjI5ZTllZmNhMDZmNQ==&zone=1",INDEPENDENT=YES
+#EXT-X-PART:DURATION=1,URI="chunk_6351.1.m4s?skid=default&signature=NjZmYzFjODBfMDcwMjA0OTZlMTE3Y2RiN2VjOGY2YjE2MDE2NTAwZThlN2Q3NjUyZTAzM2YxZTZlZmFlZTg1ZThmZWEyZmQ4Ng==&zone=1"
+#EXTINF:2,
+chunk_6350.m4s
+#EXT-X-PRELOAD-HINT:TYPE=PART,URI="chunk_6352.0.m4s?skid=default&signature=NjZmYzFjODBfMzkyZmNiOWNjNmY5N2EwN2QwNTU3YTA3M2Q0ZTRlMWU2YjliZDMyM2Y0MTRmYTY5OTdhODIyMmIwY2QwOWY1NQ==&zone=1"
+#EXT-X-RENDITION-REPORT:URI="rendition_1.m3u8"
+#EXT-X-RENDITION-REPORT:URI="rendition_2.m3u8"
+#EXT-X-RENDITION-REPORT:URI="rendition_3.m3u8"
+#EXT-X-RENDITION-REPORT:URI="rendition_4.m3u8"
+#EXT-X-RENDITION-REPORT:URI="rendition_5.m3u8"
+"""
+
 LOW_LATENCY_WITH_PRELOAD_AND_BYTERANGES_PLAYLIST = """
 #EXTM3U
 #EXTINF:4.08,
@@ -1524,5 +1576,15 @@
 content-131.jpg
 """
 
+WINDOWS_PLAYLIST = r"""\
+#EXTM3U
+#EXT-X-VERSION:3
+#EXT-X-INDEPENDENT-SEGMENTS
+#EXT-X-TARGETDURATION:10
+#EXT-X-MEDIA-SEQUENCE:55119
+#EXT-X-PROGRAM-DATE-TIME:2024-10-11T09:53:30.001Z
+#EXTINF:9.600,
+C:\HLS Video\test1.ts
+"""
 
 del abspath, dirname, join
diff --git a/tests/test_loader.py b/tests/test_loader.py
index 509b7714..db114c4e 100644
--- a/tests/test_loader.py
+++ b/tests/test_loader.py
@@ -5,8 +5,11 @@
 import os
 import socket
 import urllib.parse
-import m3u8
+import unittest.mock
+
 import pytest
+
+import m3u8
 import playlists
 
 
@@ -146,3 +149,14 @@ def test_raise_timeout_exception_if_timeout_happens_when_loading_from_uri():
         assert True
     else:
         assert False
+
+
+def test_windows_paths():
+    file_path = "C:\\HLS Video\test.m3ui8"
+    with unittest.mock.patch("builtins.open") as mock_open:
+        mock_open.return_value.__enter__.return_value.read.return_value = (
+            playlists.WINDOWS_PLAYLIST
+        )
+        obj = m3u8.load(file_path)
+    assert obj.segments[0].uri == "C:\\HLS Video\\test1.ts"
+    assert obj.segments[0].absolute_uri == "C:\\HLS Video\\test1.ts"
diff --git a/tests/test_model.py b/tests/test_model.py
index abeb61dc..8185fe38 100755
--- a/tests/test_model.py
+++ b/tests/test_model.py
@@ -1345,6 +1345,14 @@ def test_ll_playlist():
     assert obj.preload_hint.base_uri == "http://localhost/test_base_uri"
 
 
+def test_ll_playlist_omitted_attributes():
+    # RFC 8216 4.4.5.4 states that even the required attribute LAST-MSN
+    # can be omitted in certain conditions.
+    obj = m3u8.M3U8(playlists.LOW_LATENCY_OMITTED_ATTRIBUTES)
+    text = obj.dumps()
+    assert '#EXT-X-RENDITION-REPORT:URI="rendition_1.m3u8"\n' in text
+
+
 def test_add_rendition_report_to_playlist():
     obj = m3u8.M3U8()