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ODBC and "invalid value" error when using % character within password - Power Automate desktop

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Posted on by unslog

hello.

Is there a workaround for Power Automate to accept % symbols within a SQL connection string using ODBC file DSN? It appears to deem the character as an "invalid value" despite wrapping the password in {} bracket.

See screenshot

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lbendlin 8,551 Super User 2026 Season 1 on at

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Single quotes around the password should work

c# - Escape ;(semicolon) in odbc connection string in app.config file - Stack Overflow

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unslog 13 on at

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Thanks for reply, however that doesn't work.

It appears to be specifically a problem with the % symbol. I also tried other methods mentioned in the link you provided to no avail. the semi-colon within the password works with no problem. Doesn't even in to be wrapped with {} or ''

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lbendlin 8,551 Super User 2026 Season 1 on at

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How about %% ? Have you considered changing the password?

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unslog 13 on at

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Hi,

The %% kinda worked - i.e. the "invalid value" stopped appearing...however this then broke the next step "Execute SQL Query" as the SQL connection variable uses % symbols, so suspect a clash.

So the workaround to this (if anyone else experiences this behaviour) is to amalgamate the connection string with the SQL query (see screenshot), The only issue with is approach is I'm unable to close the SQL connection (which appears to depends on a connection string variable.

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