Windows 10 Environment Variable Maximum length

I am installing  RAD Studio 10.3 on a PC running Windows 10 Professional  and have received a warning before installation commences : "It has been detected that your system PATH environment variable is too long"
The link to further information states:
"The installation of RAD Studio adds up to 218 characters to your PATH environment variable. If the length of your PATH environment variable goes beyond 2048 characters, your system will misbehave".

The length of the "PATH" environment is 1936 characters.
I was under the impression that Windows 10 has a system PATH environment maximum length of 4096 characters.

Is this correct and in which case should I proceed with installation ?

Error Message
Roger AlcindorAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

JohnBusiness Consultant (Owner)Commented:
If you want a large environment length, you can edit the registry to make it larger.

My path is under 1000 characters so I have not had to do this.
Sam Simon NasserIT Support ProfessionalCommented:
to check the system path: right click computer, properties, advanced system settings, advanced, environment variables.
from the second box, you'll find PATH which includes the current entries. for example, mine is:
C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\ProgramData\Oracle\Java\javapath;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;%SYSTEMROOT%\System32\WindowsPowerShell\v1.0\

Open in new window

copy your path here to check if there are any problems with your PATH.
Roger AlcindorAuthor Commented:
Thanks for your comment John,
Unfortunately, the path is being added to by an installation application so I don't have the information to add the data manually.
I ended up removing some obsolete paths and un-installing  software which wasn't really needed on the machine (SQL Server 17).
That freed up just over 400 character and RAD Studio 10.3 installed without error. Your comment was useful to know.

Best wishes,


Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Windows 10

From novice to tech pro — start learning today.