diff --git a/inst/tinytest/test_filestore.R b/inst/tinytest/test_filestore.R
index c663090edf..8e6bdf8e9a 100644
--- a/inst/tinytest/test_filestore.R
+++ b/inst/tinytest/test_filestore.R
@@ -1,6 +1,9 @@
 library(tinytest)
 library(tiledb)
 
+isOldWindows <- Sys.info()[["sysname"]] == "Windows" && grepl('Windows Server 2008', osVersion)
+if (isOldWindows) exit_file("skip this file on old Windows releases")
+
 ctx <- tiledb_ctx(limitTileDBCores())
 
 if (tiledb_version(TRUE) < "2.9.0") exit_file("Needs TileDB 2.9.* or later")
diff --git a/inst/tinytest/test_timetravel.R b/inst/tinytest/test_timetravel.R
index e6a1f65116..e1e86197ec 100644
--- a/inst/tinytest/test_timetravel.R
+++ b/inst/tinytest/test_timetravel.R
@@ -130,6 +130,8 @@ expect_true(length(ndircons2) < length(ndircons))
 
 ## earlier time travel test recast via timestamp_{start,end}
 ## time travel
+if (Sys.getenv("CI") != "") exit_file("Skip remainder")
+
 tmp <- tempfile()
 dir.create(tmp)
 dom <- tiledb_domain(dims = c(tiledb_dim("rows", c(1L, 10L), 5L, "INT32"),