.RProj files not opening directly into RStudio

Hi, I updated my R (4.1.1) & Rstudio (1.4.1717) versions today. Below is my session info. The issue I am facing is that any old or new .RProj extension file are not automatically recognized by RStudio. The only way I can open this file is by going into RStudio and go with file > open File > .RProj

In the past, I could double click on the .RProj file and open Rstudio with all the relevant files associated with that project. Can someone help? Thanks.

R version 4.1.1 (2021-08-10)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 10 x64 (build 17763)

Matrix products: default

Random number generation:
RNG: Mersenne-Twister
Normal: Inversion
Sample: Rounding

[1] LC_COLLATE=English_United States.1252 LC_CTYPE=English_United States.1252 LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C LC_TIME=English_United States.1252

attached base packages:
[1] stats graphics grDevices utils datasets methods base

other attached packages:
[1] ggplot2_3.3.5

loaded via a namespace (and not attached):
[1] magrittr_2.0.1 tidyselect_1.1.1 munsell_0.5.0 colorspace_2.0-2 R6_2.5.1 rlang_0.4.11
[7] fansi_0.5.0 dplyr_1.0.7 tools_4.1.1 grid_4.1.1 gtable_0.3.0 utf8_1.2.2
[13] DBI_1.1.1 withr_2.4.2 ellipsis_0.3.2 digest_0.6.27 assertthat_0.2.1 tibble_3.1.3
[19] lifecycle_1.0.0 crayon_1.4.1 farver_2.1.0 purrr_0.3.4 vctrs_0.3.8 glue_1.4.2
[25] labeling_0.4.2 compiler_4.1.1 pillar_1.6.2 generics_0.1.0 scales_1.1.1 pkgconfig_2.0.3

Hi @dighenilesh,
Welcome to the RStudio Community Forum.

It sounds like your default file association has been "lost" or changed.
Type "file association" in the Windows search box, go to the first link (in Settings), scroll down to .Rproj file extension, and then add RStudio as the default app for that file type. After that, a double-click on an .Rproj file should take you straight to that project in RStudio.

Of course, RStudio projects can also be accessed easily from the Projects pull-down list (top right of the RStudio main window).

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